Colored pencils

Color or colour (see spelling differences) is the visual perceptual property corresponding in humans to the categories called red, green, blue, and others. Color derives from the spectrum of light (distribution of light power versus wavelength) interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical specifications of color are also associated with objects, materials, light sources, etc., based on their physical properties such as light absorption, reflection, or emission spectra. By defining a color space, colors can be identified numerically by their coordinates.

Because perception of color stems from the varying spectral sensitivity of different types of cone cells in the retina to different parts of the spectrum, colors may be defined and quantified by the degree to which they stimulate these cells. These physical or physiological quantifications of color, however, do not fully explain the psychophysical perception of color appearance.

The science of color is sometimes called chromatics, chromatography, colorimetry, or simply color science. It includes the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic radiation in the visible range (that is, what we commonly refer to simply as light).

Physics[link]

Continuous optical spectrum rendered into the sRGB color space.

Electromagnetic radiation is characterized by its wavelength (or frequency) and its intensity. When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390 nm to 750 nm), it is known as "visible light".

Most light sources emit light at many different wavelengths; a source's spectrum is a distribution giving its intensity at each wavelength. Although the spectrum of light arriving at the eye from a given direction determines the color sensation in that direction, there are many more possible spectral combinations than color sensations. In fact, one may formally define a color as a class of spectra that give rise to the same color sensation, although such classes would vary widely among different species, and to a lesser extent among individuals within the same species. In each such class the members are called metamers of the color in question.

Spectral colors[link]

The familiar colors of the rainbow in the spectrum – named using the Latin word for appearance or apparition by Isaac Newton in 1671 – include all those colors that can be produced by visible light of a single wavelength only, the pure spectral or monochromatic colors. The table at right shows approximate frequencies (in terahertz) and wavelengths (in nanometers) for various pure spectral colors. The wavelengths are measured in air or vacuum (see refraction).

The color table should not be interpreted as a definitive list – the pure spectral colors form a continuous spectrum, and how it is divided into distinct colors linguistically is a matter of culture and historical contingency (although people everywhere have been shown to perceive colors in the same way^[2]). A common list identifies six main bands: red, orange, yellow, green, blue, and violet. Newton's conception included a seventh color, indigo, between blue and violet. Optical scientists Hardy and Perrin list indigo as between 446 and 464 nm wavelength.^[3]

The intensity of a spectral color, relative to the context in which it is viewed, may alter its perception considerably; for example, a low-intensity orange-yellow is brown, and a low-intensity yellow-green is olive-green.

For discussion of non-spectral colors, see below.

Color of objects[link]

The color of an object depends on both the physics of the object in its environment and the characteristics of the perceiving eye and brain. Physically, objects can be said to have the color of the light leaving their surfaces, which normally depends on the spectrum of the incident illumination and the reflectance properties of the surface, as well as potentially on the angles of illumination and viewing. Some objects not only reflect light, but also transmit light or emit light themselves (see below), which contribute to the color also. And a viewer's perception of the object's color depends not only on the spectrum of the light leaving its surface, but also on a host of contextual cues, so that the color tends to be perceived as relatively constant: that is, relatively independent of the lighting spectrum, viewing angle, etc. This effect is known as color constancy.

The upper disk and the lower disk have exactly the same objective color, and are in identical gray surroundings; based on context differences, humans perceive the squares as having different reflectances, and may interpret the colors as different color categories; see checker shadow illusion.

Some generalizations of the physics can be drawn, neglecting perceptual effects for now:

• Light arriving at an opaque surface is either reflected "specularly" (that is, in the manner of a mirror), scattered (that is, reflected with diffuse scattering), or absorbed – or some combination of these.
• Opaque objects that do not reflect specularly (which tend to have rough surfaces) have their color determined by which wavelengths of light they scatter more and which they scatter less (with the light that is not scattered being absorbed). If objects scatter all wavelengths, they appear white. If they absorb all wavelengths, they appear black.
• Opaque objects that specularly reflect light of different wavelengths with different efficiencies look like mirrors tinted with colors determined by those differences. An object that reflects some fraction of impinging light and absorbs the rest may look black but also be faintly reflective; examples are black objects coated with layers of enamel or lacquer.
• Objects that transmit light are either translucent (scattering the transmitted light) or transparent (not scattering the transmitted light). If they also absorb (or reflect) light of various wavelengths differentially, they appear tinted with a color determined by the nature of that absorption (or that reflectance).
• Objects may emit light that they generate themselves, rather than merely reflecting or transmitting light. They may do so because of their elevated temperature (they are then said to be incandescent), as a result of certain chemical reactions (a phenomenon called chemoluminescence), or for other reasons (see the articles Phosphorescence and List of light sources).
• Objects may absorb light and then as a consequence emit light that has different properties. They are then called fluorescent (if light is emitted only while light is absorbed) or phosphorescent (if light is emitted even after light ceases to be absorbed; this term is also sometimes loosely applied to light emitted because of chemical reactions).

For further treatment of the color of objects, see structural color, below.

To summarize, the color of an object is a complex result of its surface properties, its transmission properties, and its emission properties, all of which factors contribute to the mix of wavelengths in the light leaving the surface of the object. The perceived color is then further conditioned by the nature of the ambient illumination, and by the color properties of other objects nearby, via the effect known as color constancy and via other characteristics of the perceiving eye and brain.

Perception[link]

Normalized typical human cone cell responses (S, M, and L types) to monochromatic spectral stimuli

Development of theories of color vision[link]

Although Aristotle and other ancient scientists had already written on the nature of light and color vision, it was not until Newton that light was identified as the source of the color sensation. In 1810, Goethe published his comprehensive Theory of Colors in which he described the physiological effects of color.

In 1801 Thomas Young proposed his trichromatic theory, based on the observation that any color could be matched with a combination of three lights. This theory was later refined by James Clerk Maxwell and Hermann von Helmholtz. As Helmholtz puts it, "the principles of Newton's law of mixture were experimentally confirmed by Maxwell in 1856. Young's theory of color sensations, like so much else that this marvellous investigator achieved in advance of his time, remained unnoticed until Maxwell directed attention to it."^[4]

At the same time as Helmholtz, Ewald Hering developed the opponent process theory of color, noting that color blindness and afterimages typically come in opponent pairs (red-green, blue-orange, yellow-purple, and black-white). Ultimately these two theories were synthesized in 1957 by Hurvich and Jameson, who showed that retinal processing corresponds to the trichromatic theory, while processing at the level of the lateral geniculate nucleus corresponds to the opponent theory.^[5]

In 1931, an international group of experts known as the Commission internationale de l'éclairage (CIE) developed a mathematical color model, which mapped out the space of observable colors and assigned a set of three numbers to each.

Color in the eye[link]

This image (when viewed in full size, 1000 pixels wide) contains 1 million pixels, each of a different color. The human eye can distinguish about 10 million different colors.^[6]

The ability of the human eye to distinguish colors is based upon the varying sensitivity of different cells in the retina to light of different wavelengths. Humans being trichromatic, the retina contains three types of color receptor cells, or cones. One type, relatively distinct from the other two, is most responsive to light that we perceive as violet, with wavelengths around 420 nm; cones of this type are sometimes called short-wavelength cones, S cones, or blue cones. The other two types are closely related genetically and chemically. One of them, sometimes called long-wavelength cones, L cones, or red cones, is most sensitive to light we perceive as greenish yellow, with wavelengths around 564 nm; the other type, known as middle-wavelength cones, M cones, or green cones is most sensitive to light perceived as green, with wavelengths around 534 nm.

Light, no matter how complex its composition of wavelengths, is reduced to three color components by the eye. For each location in the visual field, the three types of cones yield three signals based on the extent to which each is stimulated. These amounts of stimulation are sometimes called tristimulus values.

The response curve as a function of wavelength for each type of cone is illustrated above. Because the curves overlap, some tristimulus values do not occur for any incoming light combination. For example, it is not possible to stimulate only the mid-wavelength (so-called "green") cones; the other cones will inevitably be stimulated to some degree at the same time. The set of all possible tristimulus values determines the human color space. It has been estimated that humans can distinguish roughly 10 million different colors.^[6]

The other type of light-sensitive cell in the eye, the rod, has a different response curve. In normal situations, when light is bright enough to strongly stimulate the cones, rods play virtually no role in vision at all.^[7] On the other hand, in dim light, the cones are understimulated leaving only the signal from the rods, resulting in a colorless response. (Furthermore, the rods are barely sensitive to light in the "red" range.) In certain conditions of intermediate illumination, the rod response and a weak cone response can together result in color discriminations not accounted for by cone responses alone. These effects, combined, are summarized also in the Kruithof curve, that describes the change of color perception and pleasingness of light as function of temperature and intensity.

Color in the brain[link]

The visual dorsal stream (green) and ventral stream (purple) are shown. The ventral stream is responsible for color perception.

While the mechanisms of color vision at the level of the retina are well-described in terms of tristimulus values (see above), color processing after that point is organized differently. A dominant theory of color vision proposes that color information is transmitted out of the eye by three opponent processes, or opponent channels, each constructed from the raw output of the cones: a red–green channel, a blue–yellow channel, and a black–white "luminance" channel. This theory has been supported by neurobiology, and accounts for the structure of our subjective color experience. Specifically, it explains why we cannot perceive a "reddish green" or "yellowish blue", and it predicts the color wheel: it is the collection of colors for which at least one of the two color channels measures a value at one of its extremes.

The exact nature of color perception beyond the processing already described, and indeed the status of color as a feature of the perceived world or rather as a feature of our perception of the world, is a matter of complex and continuing philosophical dispute (see qualia).

Nonstandard color perception[link]

Color deficiency[link]

If one or more types of a person's color-sensing cones are missing or less responsive than normal to incoming light, that person can distinguish fewer colors and is said to be color deficient or color blind (though this latter term can be misleading; almost all color deficient individuals can distinguish at least some colors). Some kinds of color deficiency are caused by anomalies in the number or nature of cones in the retina. Others (like central or cortical achromatopsia) are caused by neural anomalies in those parts of the brain where visual processing takes place.

Tetrachromacy[link]

While most humans are trichromatic (having three types of color receptors), many animals, known as tetrachromats, have four types. These include some species of spiders, most marsupials, birds, reptiles, and many species of fish. Other species are sensitive to only two axes of color or do not perceive color at all; these are called dichromats and monochromats respectively. A distinction is made between retinal tetrachromacy (having four pigments in cone cells in the retina, compared to three in trichromats) and functional tetrachromacy (having the ability to make enhanced color discriminations based on that retinal difference). As many as half of all women are retinal tetrachromats.^[8]:p.256 The phenomenon arises when an individual receives two slightly different copies of the gene for either the medium- or long-wavelength cones, which are carried on the x-chromosome. To have two different genes, a person must have two x-chromosomes, which is why the phenomenon only occurs in women.^[8] For some of these retinal tetrachromats, color discriminations are enhanced, making them functional tetrachromats.^[8]

Synesthesia[link]

In certain forms of synesthesia, perceiving letters and numbers (grapheme–color synesthesia) or hearing musical sounds (music–color synesthesia) will lead to the unusual additional experiences of seeing colors. Behavioral and functional neuroimaging experiments have demonstrated that these color experiences lead to changes in behavioral tasks and lead to increased activation of brain regions involved in color perception, thus demonstrating their reality, and similarity to real color percepts, albeit evoked through a non-standard route.

Afterimages[link]

An example of an Afterimage

After exposure to strong light in their sensitivity range, photoreceptors of a given type become desensitized. For a few seconds after the light ceases, they will continue to signal less strongly than they otherwise would. Colors observed during that period will appear to lack the color component detected by the desensitized photoreceptors. This effect is responsible for the phenomenon of afterimages, in which the eye may continue to see a bright figure after looking away from it, but in a complementary color.

Afterimage effects have also been utilized by artists, including Vincent van Gogh.

Color constancy[link]

There is an interesting phenomenon which occurs when an artist uses a limited color palette: the eye tends to compensate by seeing any gray or neutral color as the color which is missing from the color wheel. For example, in a limited palette consisting of red, yellow, black, and white, a mixture of yellow and black will appear as a variety of green, a mixture of red and black will appear as a variety of purple, and pure gray will appear bluish.^[9]

The trichromatic theory discussed above is strictly true when the visual system is in a fixed state of adaptation. In reality, the visual system is constantly adapting to changes in the environment and compares the various colors in a scene to reduce the effects of the illumination. If a scene is illuminated with one light, and then with another, as long as the difference between the light sources stays within a reasonable range, the colors in the scene appear relatively constant to us. This was studied by Edwin Land in the 1970s and led to his retinex theory of color constancy.

It should be noted, that both phenomena described above are readily explained and mathematical modeled with modern theories of chromatic adaptation and color appearance (e.g. CIECAM02, iCAM).^[10] There is no need to dismiss the trichromatic theory of vision, but rather it must be enhanced with an understanding of how the visual system adapts (adjusts) to changes in the viewing environment.

Color naming[link]

Colors vary in several different ways, including hue (shades of red, orange, yellow, green, blue, and violet), saturation, brightness, and gloss. Some color words are derived from the name of an object of that color, such as "orange" or "salmon", while others are abstract, like "red".

In the 1969 study Basic Color Terms: Their Universality and Evolution, Brent Berlin and Paul Kay describe a pattern in naming "basic" colors (like "red" but not "red-orange" or "dark red" or "blood red", which are "shades" of red). All languages that have two "basic" color names distinguish dark/cool colors from bright/warm colors. The next colors to be distinguished are usually red and then yellow or green. All languages with six "basic" colors include black, white, red, green, blue, and yellow. The pattern holds up to a set of twelve: black, gray, white, pink, red, orange, yellow, green, blue, purple, brown, and azure (distinct from blue in Russian and Italian, but not English).

Associations[link]

Individual colors have a variety of cultural associations such as national colors (in general described in individual color articles and color symbolism). The field of color psychology attempts to identify the effects of color on human emotion and activity. Chromotherapy is a form of alternative medicine attributed to various Eastern traditions. Colors have different associations in different countries and cultures.^[11]

Different colors have been demonstrated to have effects on cognition. For example, researchers at the University of Linz in Austria demonstrated that the color red significantly decreases cognitive functioning in men.^[12]

Spectral colors and color reproduction[link]

The CIE 1931 color space chromaticity diagram. The outer curved boundary is the spectral (or monochromatic) locus, with wavelengths shown in nanometers. The colors depicted depend on the color space of the device on which you are viewing the image, and therefore may not be a strictly accurate representation of the color at a particular position, and especially not for monochromatic colors.

Most light sources are mixtures of various wavelengths of light. Many such sources can still effectively produce a spectral color, as the eye cannot distinguish them from single-wavelength sources. For example, most computer displays reproduce the spectral color orange as a combination of red and green light; it appears orange because the red and green are mixed in the right proportions to allow the eye's cones to respond the way they do to the spectral color orange.

A useful concept in understanding the perceived color of a non-monochromatic light source is the dominant wavelength, which identifies the single wavelength of light that produces a sensation most similar to the light source. Dominant wavelength is roughly akin to hue.

There are many color perceptions that by definition cannot be pure spectral colors due to desaturation or because they are purples (mixtures of red and violet light, from opposite ends of the spectrum). Some examples of necessarily non-spectral colors are the achromatic colors (black, gray, and white) and colors such as pink, tan, and magenta.

Two different light spectra that have the same effect on the three color receptors in the human eye will be perceived as the same color. They are metamers of that color. This is exemplified by the white light emitted by fluorescent lamps, which typically has a spectrum of a few narrow bands, while daylight has a continuous spectrum. The human eye cannot tell the difference between such light spectra just by looking into the light source, although reflected colors from objects can look different. (This is often exploited; for example, to make fruit or tomatoes look more intensely red.)

Similarly, most human color perceptions can be generated by a mixture of three colors called primaries. This is used to reproduce color scenes in photography, printing, television, and other media. There are a number of methods or color spaces for specifying a color in terms of three particular primary colors. Each method has its advantages and disadvantages depending on the particular application.

No mixture of colors, however, can produce a fully pure color perceived as completely identical to a spectral color, although one can get very close for the longer wavelengths, where the chromaticity diagram above has a nearly straight edge. For example, mixing green light (530 nm) and blue light (460 nm) produces cyan light that is slightly desaturated, because response of the red color receptor would be greater to the green and blue light in the mixture than it would be to a pure cyan light at 485 nm that has the same intensity as the mixture of blue and green.

Because of this, and because the primaries in color printing systems generally are not pure themselves, the colors reproduced are never perfectly saturated colors, and so spectral colors cannot be matched exactly. However, natural scenes rarely contain fully saturated colors, thus such scenes can usually be approximated well by these systems. The range of colors that can be reproduced with a given color reproduction system is called the gamut. The CIE chromaticity diagram can be used to describe the gamut.

Another problem with color reproduction systems is connected with the acquisition devices, like cameras or scanners. The characteristics of the color sensors in the devices are often very far from the characteristics of the receptors in the human eye. In effect, acquisition of colors that have some special, often very "jagged", spectra caused for example by unusual lighting of the photographed scene can be relatively poor.

Species that have color receptors different from humans – such as bird species, which may have four receptors – can make color discriminations that humans cannot. A color reproduction system "tuned" to a human with normal color vision may give very inaccurate results for the other observers, human or non-human.

The different color response of different devices can be problematic if not properly managed. For color information stored and transferred in digital form, color management techniques, such as those based on ICC profiles, can help to avoid distortions of the reproduced colors. Color management does not circumvent the gamut limitations of particular output devices, but can assist in finding good mapping of input colors into the gamut that can be reproduced.

Pigments and reflective media[link]

Pigments are chemicals that selectively absorb and reflect different spectra of light. When a surface is painted with a pigment, light hitting the surface is reflected, minus some wavelengths. This subtraction of wavelengths produces the appearance of different colors. Most paints are a blend of several chemical pigments, intended to produce a reflection of a given color.

Pigment manufacturers assume the source light will be white, or of roughly equal intensity across the spectrum. If the light is not a pure white source (as in the case of nearly all forms of artificial lighting), the resulting spectrum will appear a slightly different color. Red paint, viewed under blue light, may appear black. Red paint is red because it reflects only the red components of the spectrum. Blue light, containing none of these, will create no reflection from red paint, creating the appearance of black.

Structural color[link]

Structural colors are colors caused by interference effects rather than by pigments. Color effects are produced when a material is scored with fine parallel lines, formed of one or more parallel thin layers, or otherwise composed of microstructures on the scale of the color's wavelength. If the microstructures are spaced randomly, light of shorter wavelengths will be scattered preferentially to produce Tyndall effect colors: the blue of the sky (Rayleigh scattering, caused by structures much smaller than the wavelength of light, in this case air molecules), the luster of opals, and the blue of human irises. If the microstructures are aligned in arrays, for example the array of pits in a CD, they behave as a diffraction grating: the grating reflects different wavelengths in different directions due to interference phenomena, separating mixed "white" light into light of different wavelengths. If the structure is one or more thin layers then it will reflect some wavelengths and transmit others, depending on the layers' thickness.

Structural color is studied in the field of thin-film optics. A layman's term that describes particularly the most ordered or the most changeable structural colors is iridescence. Structural color is responsible for the blues and greens of the feathers of many birds (the blue jay, for example), as well as certain butterfly wings and beetle shells. Variations in the pattern's spacing often give rise to an iridescent effect, as seen in peacock feathers, soap bubbles, films of oil, and mother of pearl, because the reflected color depends upon the viewing angle. Numerous scientists have carried out research in butterfly wings and beetle shells, including Isaac Newton and Robert Hooke. Since 1942, electron micrography has been used, advancing the development of products that exploit structural color, such as "photonic" cosmetics.^[13]

Additional terms[link]

• Colorfulness, chroma, purity, or saturation: how "intense" or "concentrated" a color is. Technical definitions distinguish between colorfulness, chroma, and saturation as distinct perceptual attributes and include purity as a physical quantity. These terms, and others related to light and color are internationally agreed upon and published in the CIE Lighting Vocabulary.^[14] More readily available texts on colorimetry also define and explain these terms.^[10][15]
• Dichromatism: a phenomenon where the hue is dependent on concentration and/or thickness of the absorbing substance.
• Hue: the color's direction from white, for example in a color wheel or chromaticity diagram.
• Shade: a color made darker by adding black.
• Tint: a color made lighter by adding white.
• Value, brightness, lightness, or luminosity: how light or dark a color is.

See also[link]

Find more about Color on Wikipedia's sister projects:
	Definitions and translations from Wiktionary
	Images and media from Commons

• Chromophore
• CIECAM02
• Color analysis
• Color mapping
• Complementary color
• Impossible color
• International Color Consortium
• International Commission on Illumination
• List of colors (compact version)
• Neutral color
• Pearlescent coating including Metal effect pigments
• Primary, secondary and tertiary colors
• Rainbow

References[link]

External links and sources[link]

• Bibliography Database on Color Theory, Buenos Aires University
• Color entry by Barry Maund in the Stanford Encyclopedia of Philosophy
• Why Should Engineers and Scientists Be Worried About Color?
• Robert Ridgway's A Nomenclature of Colors (1886) and Color Standards and Color Nomenclature (1912) - text-searchable digital facsimiles at Linda Hall Library
• Albert Henry Munsell's A Color Notation, (1907) at Project Gutenberg
• AIC, International Colour Association

lez:Ранг

Adolf Hitler
Hitler in 1937
Führer of Germany
In office 2 August 1934 – 30 April 1945
Preceded by	Paul von Hindenburg (as President)
Succeeded by	Karl Dönitz (as President)
Chancellor of Germany
In office 30 January 1933 – 30 April 1945
President	Paul von Hindenburg
Deputy	Franz von Papen Position vacant
Preceded by	Kurt von Schleicher
Succeeded by	Joseph Goebbels
Reichsstatthalter of Prussia
In office 30 January 1933 – 30 January 1935
Prime Minister	Franz von Papen Hermann Göring
Preceded by	Office created
Succeeded by	Office abolished
Personal details
Born	(1889-04-20)20 April 1889 Braunau am Inn, Austria–Hungary
Died	30 April 1945(1945-04-30) (aged 56) Berlin, Germany
Nationality	Austrian citizen until 7 April 1925[1] German citizen after 25 February 1932
Political party	National Socialist German Workers' Party (1921–1945)
Other political affiliations	German Workers' Party (1920–1921)
Spouse(s)	Eva Braun (29–30 April 1945)
Occupation	Politician, soldier, artist, writer
Religion	See Adolf Hitler's religious views
Signature
Military service
Allegiance	German Empire
Service/branch	Reichsheer
Years of service	1914–1918
Rank	Gefreiter
Unit	16th Bavarian Reserve Regiment
Battles/wars	World War I
Awards	Iron Cross First Class Iron Cross Second Class Wound Badge

Adolf Hitler (German: [ˈadɔlf ˈhɪtlɐ] ( listen); 20 April 1889 – 30 April 1945) was an Austrian-born German politician and the leader of the National Socialist German Workers Party (German: Nationalsozialistische Deutsche Arbeiterpartei (NSDAP), commonly referred to as the Nazi Party). He was chancellor of Germany from 1933 to 1945 and dictator of Nazi Germany (as Führer und Reichskanzler) from 1934 to 1945. Hitler is commonly associated with the rise of fascism in Europe, World War II, and the Holocaust.

A decorated veteran of World War I, Hitler joined the German Workers' Party, precursor of the Nazi Party, in 1919, and became leader of the NSDAP in 1921. In 1923, he attempted a coup d'état, known as the Beer Hall Putsch, in Munich. The failed coup resulted in Hitler's imprisonment, during which time he wrote his memoir, Mein Kampf (My Struggle). After his release in 1924, Hitler gained popular support by attacking the Treaty of Versailles and promoting Pan-Germanism, antisemitism, and anticommunism with charismatic oratory and Nazi propaganda. After his appointment as chancellor in 1933, he transformed the Weimar Republic into the Third Reich, a single-party dictatorship based on the totalitarian and autocratic ideology of Nazism. His aim was to establish a New Order of absolute Nazi German hegemony in continental Europe.

Hitler's foreign and domestic policies had the goal of seizing Lebensraum ("living space") for the Germanic people. He directed the rearmament of Germany and the invasion of Poland by the Wehrmacht in September 1939, leading to the outbreak of World War II in Europe. Under Hitler's rule, in 1941 German forces and their European allies occupied most of Europe and North Africa. These gains were gradually reversed, and in 1945 the Allied armies defeated the German army. Hitler's supremacist and racially motivated policies resulted in the systematic murder of eleven million people, including nearly six million Jews.

In the final days of the war, during the Battle of Berlin in 1945, Hitler married his long-time mistress, Eva Braun. On 30 April 1945, less than two days later, the two committed suicide to avoid capture by the Red Army, and their corpses were burned.

Early years[link]

Ancestry[link]

Hitler's father, Alois Hitler (1837–1903), was the illegitimate child of Maria Anna Schicklgruber. Alois's birth certificate did not name the father, so the child bore his mother's surname. In 1842 Johann Georg Hiedler married Anna. After she died in 1847 and he in 1856, Alois was brought up in the family of Hiedler's brother, Johann Nepomuk Hiedler.^[2] It was not until 1876 that Alois was legitimated and the baptismal register changed by a priest before three witnesses.^[3] While awaiting trial at Nuremberg in 1945, Nazi official Hans Frank suggested the existence of letters claiming that Alois' mother was employed as a housekeeper for a Jewish family in Graz and that the family's 19-year-old son, Leopold Frankenberger, had fathered Alois.^[4] However, no Frankenberger, Jewish or otherwise, was registered in Graz during that period.^[5] Historians doubt the claim that Alois' father was Jewish.^[6][7]

At age 39, Alois assumed the surname "Hitler", also spelled as "Hiedler", "Hüttler", or "Huettler". The origin of the name is either "one who lives in a hut" (Standard German Hütte), "shepherd" (Standard German hüten "to guard", English "heed"), or is from the Slavic words Hidlar and Hidlarcek.^[8]

Childhood[link]

Adolf Hitler as an infant (c. 1889–1890)

Hitler's mother, Klara

Adolf Hitler was born on 20 April 1889 at the Gasthof zum Pommer, an inn in Ranshofen,^[9] a village annexed in 1938 to the municipality of Braunau am Inn, Austria-Hungary. He was the fourth of six children to Alois Hitler and Klara Pölzl (1860–1907). Adolf's older siblings – Gustav, Ida, and Otto – died in infancy.^[10] When Hitler was three, the family moved to Passau, Germany.^[11] There he acquired the distinctive lower Bavarian dialect, rather than Austrian German, which marked his speech all of his life.^[12][13][14] In 1894 the family relocated to Leonding (near Linz), and in June 1895, Alois retired to a small landholding at Hafeld, near Lambach, where he tried his hand at farming and beekeeping. Adolf attended school in nearby Fischlham. Hitler became fixated on warfare after finding a picture book about the Franco-Prussian War among his father's belongings.^[15][16]

The move to Hafeld coincided with the onset of intense father-son conflicts caused by Adolf's refusal to conform to the strict discipline of his school.^[17] Alois Hitler's farming efforts at Hafeld ended in failure, and in 1897 the family moved to Lambach. Hitler attended a Catholic school in an 11th-century Benedictine cloister, the pulpit of which bore a stylized swastika symbol on the coat of arms of Theodorich von Hagen, a former abbot.^[18] The eight-year-old Hitler took singing lessons, sang in the church choir, and even entertained thoughts of becoming a priest.^[19] In 1898 the family returned permanently to Leonding. The death of his younger brother, Edmund, from measles on 2 February 1900 deeply affected Hitler. He changed from being confident and outgoing and an excellent student, to a morose, detached, and sullen boy who constantly fought with his father and teachers.^[20]

Alois had made a successful career in the customs bureau and wanted his son to follow in his footsteps.^[21] Hitler later dramatised an episode from this period when his father took him to visit a customs office, depicting it as an event that gave rise to an unforgiving antagonism between father and son, who were both strong-willed.^[22][23][24] Ignoring his son's desire to attend a classical high school and become an artist, in September 1900 Alois sent Adolf to the Realschule in Linz.^[25] (This was the same high school that Adolf Eichmann would attend some 17 years later.)^[26] Hitler rebelled against this decision, and in Mein Kampf revealed that he did poorly in school, hoping that once his father saw "what little progress I was making at the technical school he would let me devote myself to my dream."^[27]

Hitler became obsessed with German nationalism from a young age.^[28] He expressed loyalty only to Germany, despising the declining Habsburg Monarchy and its rule over an ethnically-variegated empire.^[29][30] Hitler and his friends used the German greeting "Heil", and sang the German anthem "Deutschland Über Alles" instead of the Austrian Imperial anthem.^[31]

After Alois' sudden death on 3 January 1903, Hitler's performance at school deteriorated. His mother allowed him to quit in autumn 1905.^[32] He enrolled at the Realschule in Steyr in September 1904; his behaviour and performance showed some slight and gradual improvement.^[33] In the autumn of 1905, after passing a repeat and the final exam, Hitler left the school without showing any ambitions for further schooling or clear plans for a career.^[34]

Early adulthood in Vienna and Munich[link]

From 1905, Hitler lived a bohemian life in Vienna, financed by orphan's benefits and support from his mother. He worked as a casual labourer and eventually as a painter, selling watercolours. The Academy of Fine Arts Vienna rejected him twice, in 1907 and 1908, because of his "unfitness for painting". The director recommended that Hitler study architecture,^[35] but he lacked the academic credentials.^[36] On 21 December 1907, his mother died aged 47. After the Academy's second rejection, Hitler ran out of money. In 1909 he lived in a homeless shelter, and by 1910, he had settled into a house for poor working men on Meldemannstraße.^[37] At the time Hitler lived there, Vienna was a hotbed of religious prejudice and 19th-century racism.^[38] Fears of being overrun by immigrants from the East were widespread, and the populist mayor, Karl Lueger, exploited the rhetoric of virulent antisemitism for political effect. Georg Schönerer's pan-Germanic antisemitism had a strong following and base in the Mariahilf district, where Hitler lived.^[39] Hitler read local newspapers, such as the Deutsches Volksblatt, that fanned prejudice and played on Christian fears of being swamped by an influx of eastern Jews.^[40] Hostile to what he saw as Catholic "Germanophobia", he developed an admiration for Martin Luther.^[41]

The origin and first expression of Hitler's antisemitism have been difficult to locate.^[42] Hitler states in Mein Kampf that he first became an antisemite in Vienna.^[43] His close friend, August Kubizek, claimed that Hitler was a "confirmed antisemite" before he left Linz.^[44] Kubizek's account has been challenged by historian Brigitte Hamann, who writes that Kubizek is the only person to have said that the young Hitler was an antisemite.^[45] Hamann also notes that no antisemitic remark has been documented from Hitler during this period.^[46] Historian Ian Kershaw suggests that if Hitler had made such remarks, they may have gone unnoticed because of the prevailing antisemitism in Vienna at that time.^[47] Several sources provide strong evidence that Hitler had Jewish friends in his hostel and in other places in Vienna.^[48][49] Historian Richard J. Evans states that "historians now generally agree that his notorious, murderous anti-Semitism emerged well after Germany’s defeat [in World War I], as a product of the paranoid 'stab-in-the-back' explanation for the catastrophe".^[50]

Hitler received the final part of his father's estate in May 1913 and moved to Munich.^[51] Historians believe he left Vienna to evade conscription into the Austrian army.^[52] Hitler later claimed that he did not wish to serve the Habsburg Empire because of the mixture of "races" in its army.^[51] After he was deemed unfit for service—he failed his physical exam in Salzburg on 5 February 1914—he returned to Munich.^[53]

World War I[link]

At the outbreak of World War I, Hitler applied to serve in the German army. He was accepted in August 1914, likely as the result of a clerical oversight—he was still an Austrian citizen.^[54] Posted to the Bavarian Reserve Infantry Regiment 16 (1st Company of the List Regiment),^[55][54] he served as a dispatch runner on the Western Front in France and Belgium,^[56] spending nearly half his time well behind the front lines.^[57][58] He was present at the First Battle of Ypres, the Battle of the Somme, the Battle of Arras, and the Battle of Passchendaele, and was wounded at the Somme.^[59]

Hitler with his army comrades of the Bavarian Reserve Infantry Regiment 16 (c. 1914–1918)

He was decorated for bravery, receiving the Iron Cross, Second Class, in 1914.^[59] Recommended by Hugo Gutmann, he received the Iron Cross, First Class, on 4 August 1918,^[60] a decoration rarely awarded to one of Hitler's rank (Gefreiter). Hitler's post at regimental headquarters, providing frequent interactions with senior officers, may have helped him receive this decoration.^[61] Though his rewarded actions may have been courageous, they were probably not highly exceptional.^[62] He also received the Black Wound Badge on 18 May 1918.^[63]

Adolf Hitler as a soldier during the First World War (1914–1918)

During his service at the headquarters, Hitler pursued his artwork, drawing cartoons and instructions for an army newspaper. During the Battle of the Somme in October 1916, he was wounded either in the groin area^[64] or the left thigh by a shell that had exploded in the dispatch runners' dugout.^[65] Hitler spent almost two months in the Red Cross hospital at Beelitz, returning to his regiment on 5 March 1917.^[66] On 15 October 1918, he was temporarily blinded by a mustard gas attack and was hospitalised in Pasewalk.^[67] While there, Hitler learnt of Germany's defeat,^[68] and—by his own account—on receiving this news, he suffered a second bout of blindness.^[69]

Hitler became embittered over the collapse of the war effort, and his ideological development began to firmly take shape.^[70] He described the war as "the greatest of all experiences", and was praised by his commanding officers for his bravery.^[71] The experience reinforced his passionate German patriotism and he was shocked by Germany's capitulation in November 1918.^[72] Like other German nationalists, he believed in the Dolchstoßlegende (Stab-in-the-back legend), which claimed that the German army, "undefeated in the field," had been "stabbed in the back" on the home front by civilian leaders and Marxists, later dubbed the "November criminals".^[73]

The Treaty of Versailles stipulated that Germany must relinquish several of its territories and demilitarise the Rhineland. The treaty imposed economic sanctions and levied heavy reparations on the country. Many Germans perceived the treaty—especially Article 231, which declared Germany responsible for the war—as a humiliation.^[74] The Versailles Treaty and the economic, social, and political conditions in Germany after the war were later exploited by Hitler for political gains.^[75]

Entry into politics[link]

After World War I Hitler returned to Munich.^[76] Having no formal education and career plans or prospects, he tried to remain in the army for as long as possible.^[77] In July 1919 he was appointed Verbindungsmann (intelligence agent) of an Aufklärungskommando (reconnaissance commando) of the Reichswehr, to influence other soldiers and to infiltrate the German Workers' Party (DAP). While monitoring the activities of the DAP, Hitler became attracted to the founder Anton Drexler's antisemitic, nationalist, anti-capitalist, and anti-Marxist ideas.^[78] Drexler favoured a strong active government, a "non-Jewish" version of socialism, and solidarity among all members of society. Impressed with Hitler's oratory skills, Drexler invited him to join the DAP. Hitler accepted on 12 September 1919,^[79] becoming the party's 55th member.^[80]

A copy of Adolf Hitler's German Workers' Party (DAP) membership card

At the DAP, Hitler met Dietrich Eckart, one of its early founders and a member of the occult Thule Society.^[81] Eckart became Hitler's mentor, exchanging ideas with him and introducing him to a wide range of people in Munich society.^[82] To increase its appeal, the DAP changed its name to the Nationalsozialistische Deutsche Arbeiterpartei (National Socialist German Workers Party – NSDAP).^[83] Hitler designed the party's banner of a swastika in a white circle on a red background.^[84]

Hitler was discharged from the army in March 1920 and began working full time for the NSDAP. In February 1921—already highly effective at speaking to large audiences—he spoke to a crowd of over 6,000 in Munich.^[85] To publicise the meeting, two truckloads of party supporters drove around town waving swastika flags and throwing leaflets. Hitler soon gained notoriety for his rowdy, polemic speeches against the Treaty of Versailles, rival politicians, and especially against Marxists and Jews.^[86] At the time, the NSDAP was centred in Munich, a major hotbed of anti-government German nationalists determined to crush Marxism and undermine the Weimar Republic.^[87]

In June 1921, while Hitler and Eckart were on a fundraising trip to Berlin, a mutiny broke out within the NSDAP in Munich. Members of the its executive committee, some of whom considered Hitler to be too overbearing, wanted to merge with the rival German Socialist Party (DSP).^[88] Hitler returned to Munich on 11 July 1921 and angrily tendered his resignation. The committee members realised that his resignation would mean the end of the party.^[89] Hitler announced he would rejoin on the condition that he would replace Drexler as party chairman, and that the party headquarters would remain in Munich.^[90] The committee agreed; he rejoined the party as member 3,680. He still faced some opposition within the NSDAP: Hermann Esser and his allies printed 3,000 copies of a pamphlet attacking Hitler as a traitor to the party.^[90][a] In the following days, Hitler spoke to several packed houses and defended himself, to thunderous applause. His strategy proved successful: at a general membership meeting, he was granted absolute powers as party chairman, with only one nay vote cast.^[91]

Hitler's vitriolic beer hall speeches began attracting regular audiences. He became adept at using populist themes targeted at his audience, including the use of scapegoats who could be blamed for the economic hardships of his listeners.^[92][93][94] Historians have noted the hypnotic effect of his rhetoric on large audiences, and of his eyes in small groups. Kessel writes, "Overwhelmingly ... Germans speak with mystification of Hitler's 'hypnotic' appeal. The word shows up again and again; Hitler is said to have mesmerized the nation, captured them in a trance from which they could not break loose."^[95] Historian Hugh Trevor-Roper described "the fascination of those eyes, which had bewitched so many seemingly sober men."^[96] He used his personal magnetism and an understanding of crowd psychology to his advantage while engaged in public speaking.^[97][98] Alfons Heck, a former member of the Hitler Youth, describes the reaction to a speech by Hitler: "We erupted into a frenzy of nationalistic pride that bordered on hysteria. For minutes on end, we shouted at the top of our lungs, with tears streaming down our faces: Sieg Heil, Sieg Heil, Sieg Heil! From that moment on, I belonged to Adolf Hitler body and soul".^[99] Although his oratory skills and personal traits were generally received well by large crowds and at official events, some who had met Hitler privately noted that his appearance and demeanour failed to make a lasting impression on them.^[100][101]

Early followers included Rudolf Hess, former air force pilot Hermann Göring, and army captain Ernst Röhm. The latter became head of the Nazis' paramilitary organisation, the Sturmabteilung (SA, "Stormtroopers"), which protected meetings and frequently attacked political opponents. A critical influence on his thinking during this period was the Aufbau Vereinigung,^[102] a conspiratorial group formed of White Russian exiles and early National Socialists. The group, financed with funds channelled from wealthy industrialists like Henry Ford, introduced him to the idea of a Jewish conspiracy, linking international finance with Bolshevism.^[103]

Beer Hall Putsch[link]

Drawing of Hitler (30 October 1923)

Hitler enlisted the help of World War I General Erich Ludendorff for an attempted coup known as the "Beer Hall Putsch" (also known as the "Hitler Putsch" or "Munich Putsch"). The Nazi Party had used Italian Fascism as a model for their appearance and policies. Hitler wanted to emulate Benito Mussolini's "March on Rome" (1922) by staging his own coup in Bavaria, to be followed by challenging the government in Berlin. Hitler and Ludendorff sought the support of Staatskommissar (state commissioner) Gustav von Kahr, Bavaria's de facto ruler. However, Kahr, along with Police Chief Hans Ritter von Seisser (Seißer) and Reichswehr General Otto von Lossow, wanted to install a nationalist dictatorship without Hitler.^[104]

Hitler wanted to seize a critical moment for successful popular agitation and support.^[105] On 8 November 1923 he and the SA stormed a public meeting of 3,000 people that had been organised by Kahr in the Bürgerbräukeller, a large beer hall in Munich. Hitler interrupted Kahr's speech and announced that the national revolution had begun, declaring the formation of a new government with Ludendorff.^[106] Retiring to a backroom, Hitler, with handgun drawn, demanded and got the support of Kahr, Seisser, and Lossow.^[106] Hitler's forces initially succeeded in occupying the local Reichswehr and police headquarters; however, Kahr and his consorts quickly withdrew their support and neither the army nor the state police joined forces with him.^[107] The next day, Hitler and his followers marched from the beer hall to the Bavarian War Ministry to overthrow the Bavarian government, but police dispersed them.^[108] Sixteen NSDAP members and four police officers were killed in the failed coup.^[109]

Hitler fled to the home of Ernst Hanfstaengl, and by some accounts contemplated suicide.^[110] He was depressed but calm when arrested on 11 November 1923 for high treason.^[111] His trial began in February 1924 before the special People's Court in Munich,^[112] and Alfred Rosenberg became temporary leader of the NSDAP. On 1 April Hitler was sentenced to five years' imprisonment at Landsberg Prison.^[113] He received friendly treatment from the guards; he was allowed mail from supporters and regular visits by party comrades. The Bavarian Supreme Court issued a pardon and he was released from jail on 20 December 1924, against the state prosecutor's objections.^[114] Including time on remand, Hitler had served just over one year in prison.^[115]

Dust jacket of Mein Kampf (1926–1927)

While at Landsberg, Hitler dictated most of the first volume of Mein Kampf (My Struggle; originally entitled Four and a Half Years of Struggle against Lies, Stupidity, and Cowardice) to his deputy, Rudolf Hess.^[115] The book, dedicated to Thule Society member Dietrich Eckart, was an autobiography and an exposition of his ideology. Mein Kampf was influenced by The Passing of the Great Race by Madison Grant, which Hitler called "my Bible".^[116] The book laid out Hitler's plans for transforming German society into one based on race. Some passages implied genocide.^[117] Published in two volumes in 1925 and 1926, it sold 228,000 copies between 1925 and 1932. One million copies were sold in 1933, Hitler's first year in office. ^[118]

Rebuilding the NSDAP[link]

At the time of Hitler's release from prison, politics in Germany had become less combative, and the economy had improved. This limited Hitler's opportunities for political agitation. As a result of the failed Beer Hall Putsch, the NSDAP and its affiliated organisations were banned in Bavaria. In a meeting with Prime Minister of Bavaria Heinrich Held on 4 January 1925, Hitler agreed to respect the authority of the state: he would only seek political power through the democratic process. The meeting paved the way for the ban on the NSDAP to be lifted.^[119] However, Hitler was barred from public speaking, ^[120] a ban that remained in place until 1927.^[121] To advance his political ambitions in spite of the ban, Hitler appointed Gregor Strasser, Otto Strasser, and Joseph Goebbels to organise and grow the NSDAP in northern Germany. A superb organiser, Gregor Strasser steered a more independent political course, emphasising the socialist element of the party's programme.^[122]

Hitler ruled the NSDAP autocratically by asserting the Führerprinzip ("Leader principle"). Rank in the party was not determined by elections—positions were filled through appointment by those of higher rank, who demanded unquestioning obedience to the will of the leader.^[123]

The stock market in the United States crashed on 24 October 1929. The impact in Germany was dire: millions were thrown out of work and several major banks collapsed. Hitler and the NSDAP prepared to take advantage of the emergency to gain support for their party. They promised to repudiate the Versailles Treaty, strengthen the economy, and provide jobs.^[124]

Rise to power[link]

Brüning administration[link]

Hitler and NSDAP treasurer Franz Xaver Schwarz at the dedication of the renovation of the Palais Barlow on Brienner Straße in Munich into the Brown House headquarters, December 1930

The Great Depression in Germany provided a political opportunity for Hitler. Germans were ambivalent to the parliamentary republic, which faced strong challenges from right- and left-wing extremists. The moderate political parties were increasingly unable to stem the tide of extremism, and the German referendum of 1929 had helped to elevate Nazi ideology.^[126] The elections of September 1930 resulted in the break-up of a grand coalition and its replacement with a minority cabinet. Its leader, chancellor Heinrich Brüning of the Centre Party, governed through emergency decrees from the president, Paul von Hindenburg. Governance by decree would become the new norm and paved the way for authoritarian forms of government.^[127] The NSDAP rose from obscurity to win 18.3% of the vote and 107 parliamentary seats in the 1930 election, becoming the second-largest party in parliament.^[128]

Hitler made a prominent appearance at the trial of two Reichswehr officers, Lieutenants Richard Scheringer and Hans Ludin, in the autumn of 1930. Both were charged with membership in the NSDAP, at that time illegal for Reichswehr personnel.^[129] The prosecution argued that the NSDAP was an extremist party, prompting defence lawyer Hans Frank to call on Hitler to testify in court.^[130] On 25 September 1930 Hitler testified that his party would pursue political power solely through democratic elections,^[131] a testimony that won him many supporters in the officer corps.^[132]

Brüning's austerity measures brought little economic improvement and were extremely unpopular.^[133] Hitler exploited this by targeting his political messages specifically at people who had been affected by the inflation of the 1920s and the Depression, such as farmers, war veterans, and the middle class.^[134]

Hitler had formally renounced his Austrian citizenship on 7 April 1925, but at the time did not acquire German citizenship. For almost seven years Hitler was stateless, unable to run for public office, and faced the risk of deportation.^[135] On 25 February 1932 the interior minister of Brunswick, who was a member of the NSDAP, appointed Hitler as administrator for the state's delegation to the Reichsrat in Berlin, making Hitler a citizen of Brunswick,^[136] and thus of Germany.^[137]

In 1932 Hitler ran against von Hindenburg in the presidential elections. The viability of his candidacy was underscored by a 27 January 1932 speech to the Industry Club in Düsseldorf, which won him support from many of Germany's most powerful industrialists.^[138] However, Hindenburg had support from various nationalist, monarchist, Catholic, and republican parties, and some social democrats. Hitler used the campaign slogan "Hitler über Deutschland" ("Hitler over Germany"), a reference to both his political ambitions and to his campaigning by aircraft.^[139] Hitler came in second in both rounds of the election, garnering more than 35% of the vote in the final election. Although he lost to Hindenburg, this election established Hitler as a strong force in German politics.^[140]

Appointment as chancellor[link]

The absence of an effective government prompted two influential politicians, Franz von Papen and Alfred Hugenberg, along with several other industrialists and businessmen, to write a letter to von Hindenburg. The signers urged Hindenburg to appoint Hitler as leader of a government "independent from parliamentary parties", which could turn into a movement that would "enrapture millions of people".^[141][142]

Hitler, at the window of the Reich Chancellery, receives an ovation on the evening of his inauguration as chancellor, 30 January 1933

Hindenburg reluctantly agreed to appoint Hitler as chancellor after two further parliamentary elections—in July and November 1932—had not resulted in the formation of a majority government. Hitler was to head a short-lived coalition government formed by the NSDAP and Hugenberg's party, the German National People's Party (DNVP). On 30 January 1933 the new cabinet was sworn in during a brief and simple ceremony in Hindenburg's office. The NSDAP held three of the eleven posts: Hitler was named chancellor, Hermann Göring was named minister without portfolio, and Wilhelm Frick was appointed minister of the interior.^[143]

Reichstag fire and March elections[link]

As chancellor, Hitler worked against attempts by the NSDAP's opponents to build a majority government. Because of the political stalemate, he asked President Hindenburg to again dissolve the Reichstag, and elections were scheduled for early March. On 27 February 1933, the Reichstag building was set on fire. Göring blamed a communist plot, because Dutch communist Marinus van der Lubbe was found in incriminating circumstances inside the burning building.^[144] At Hitler's urging, Hindenburg responded with the Reichstag Fire Decree of 28 February, which suspended basic rights and allowed detention without trial. Activities of the German Communist Party were suppressed, and some 4,000 communist party members were arrested.^[145] Researchers, including William L. Shirer and Alan Bullock, are of the opinion that the NSDAP itself was responsible for starting the fire.^[146][147]

In addition to political campaigning, the NSDAP engaged in paramilitary violence and the spread of anti-communist propaganda in the days preceding the election. On election day, 6 March 1933, the NSDAP's share of the vote increased to 43.9%, and the party acquired the largest number of seats in parliament. However, Hitler's party failed to secure an absolute majority, necessitating another coalition with the DNVP.^[148]

Day of Potsdam and the Enabling Act[link]

On 21 March 1933 the new Reichstag was constituted with an opening ceremony at the Garrison Church in Potsdam. This "Day of Potsdam" was held to demonstrate unity between the Nazi movement and the old Prussian elite and military. Hitler appeared in a morning coat and humbly greeted President von Hindenburg.^[149][150]

Paul von Hindenburg and Adolf Hitler on the Day of Potsdam, 21 March 1933

To achieve full political control despite not having an absolute majority in parliament, Hitler's government brought the Ermächtigungsgesetz (Enabling Act) to a vote in the newly elected Reichstag. The act gave Hitler's cabinet full legislative powers for a period of four years and (with certain exceptions) allowed deviations from the constitution.^[151] The bill required a two-thirds majority to pass. Leaving nothing to chance, the Nazis used the provisions of the Reichstag Fire Decree to keep several Social Democratic deputies from attending; the Communists had already been banned.^[152]

On 23 March, the Reichstag assembled at the Kroll Opera House under turbulent circumstances. Ranks of SA men served as guards inside the building, while large groups outside opposing the proposed legislation shouted slogans and threats toward the arriving members of parliament.^[153] The position of the Centre Party, the third largest party in the Reichstag, turned out to be decisive. After Hitler verbally promised party leader Ludwig Kaas that President von Hindenburg would retain his power of veto, Kaas announced the Centre Party would support the Enabling Act. Ultimately, the Enabling Act passed by a vote of 441–84, with all parties except the Social Democrats voting in favour. The Enabling Act, along with the Reichstag Fire Decree, transformed Hitler's government into a de facto legal dictatorship.^[154]

Removal of remaining limits[link]

At the risk of appearing to talk nonsense I tell you that the National Socialist movement will go on for 1,000 years! ... Don't forget how people laughed at me 15 years ago when I declared that one day I would govern Germany. They laugh now, just as foolishly, when I declare that I shall remain in power!

— Adolf Hitler to a British correspondent in Berlin, June 1934^[155]

Having achieved full control over the legislative and executive branches of government, Hitler and his political allies embarked on a systematic suppression of the remaining political opposition. The Social Democratic Party was banned and all its assets seized.^[156] While many trade union delegates were in Berlin for May Day activities, SA stormtroopers demolished trade union offices around the country. On 2 May 1933 all trade unions were forced to dissolve and their leaders were arrested; some were sent to concentration camps.^[157] The German Labour Front was formed to represent all workers, administrators, and company owners together as one group. This new labour organisation reflected the concept of national socialism in the spirit of Hitler's "Volksgemeinschaft" (German racial community).^[158]

In 1934, Hitler became Germany's head of state with the title of Führer und Reichskanzler (leader and chancellor of the Reich).

By the end of June, the other parties had been intimidated into disbanding. With the help of the SA, Hitler pressured his nominal coalition partner, Hugenberg, into resigning. On 14 July 1933 Hitler's Nazi Party was declared the only legal political party in Germany.^[158][156] The demands of the SA for more political and military power caused much anxiety among military, industrial, and political leaders. Hitler responded by purging the entire SA leadership in what became known as the Night of the Long Knives, which took place from 30 June to 2 July 1934.^[159] Hitler targeted Ernst Röhm and other political adversaries (such as Gregor Strasser and former chancellor Kurt von Schleicher). Röhm and other SA leaders, along with a number of Hitler's political enemies, were rounded up, arrested, and shot.^[160] While the international community and some Germans were shocked by the murders, many in Germany saw Hitler as restoring order.^[161]

On 2 August 1934 President von Hindenburg died. The previous day, the cabinet had enacted a law to take effect upon Hindenburg's death which abolished the office of president and combined its powers with those of the chancellor. Hitler thus became head of state as well as head of government, and was formally named as Führer und Reichskanzler (leader and chancellor).^[162] This law actually violated the Enabling Act. While the Enabling Act allowed Hitler to deviate from the constitution, it explicitly barred him from passing any law that tampered with the presidency. In 1932, the constitution had been amended to make the president of the High Court of Justice, not the chancellor, acting president pending new elections.^[163] With this law, Hitler removed the last legal remedy by which he could be removed from office.

Hitler's personal standard

As head of state, Hitler became Supreme Commander of the armed forces. The traditional loyalty oath of soldiers and sailors was altered to affirm loyalty to Hitler personally, rather than to the office of supreme commander.^[164] On 19 August, the merger of the presidency with the chancellorship was approved by a plebiscite with support of 90% of the electorate.^[165]

In early 1938 Hitler forced his War Minister, Field Marshal Werner von Blomberg, to resign when a police dossier was discovered showing that Blomberg's new wife had a record for prostitution.^[166][167] Hitler removed army commander Colonel-General Werner von Fritsch after the Schutzstaffel (SS) produced allegations that he had taken part in a homosexual relationship.^[168] Both men had already fallen into disfavour when they objected to his demand that they have the Wehrmacht ready to go to war as early as 1938.^[169] Hitler used this incident, known as the Blomberg–Fritsch Affair, to consolidate his hold over the military. He assumed Blomberg's title of Commander-in-Chief, thus taking personal command of the armed forces. He replaced the Ministry of War with the Oberkommando der Wehrmacht (High Command of the Armed Forces, or OKW), headed by General Wilhelm Keitel. On the same day, sixteen generals were stripped of their commands and 44 more were transferred; all were suspected of not being sufficiently pro-Nazi.^[170] By early February 1938, twelve other generals had been removed.^[171]

Having consolidated his political powers, Hitler suppressed or eliminated his opposition by a process termed Gleichschaltung ("bringing into line"). He attempted to gain additional public support by vowing to reverse the effects of the Depression and the Versailles Treaty.

Third Reich[link]

Economy and culture[link]

Ceremony honouring the dead (Totenehrung) on the terrace in front of the Hall of Honour (Ehrenhalle) at the Nazi party rally grounds, Nuremberg, September 1934

In 1935 Hitler appointed Hjalmar Schacht as Plenipotentiary for War Economy, in charge of preparing the economy for war. Reconstruction and rearmament were financed through Mefo bills, printing money, and seizing the assets of people arrested as enemies of the State, including Jews.^[172] Unemployment fell substantially, from six million in 1932 to one million in 1936.^[173] Hitler oversaw one of the largest infrastructure improvement campaigns in German history, leading to the construction of dams, autobahns, railroads, and other civil works. Wages were slightly reduced in the pre–World War II years over those of the Weimar Republic, while the cost of living increased by 25%.^[174]

Hitler's government sponsored architecture on an immense scale. Albert Speer, instrumental in implementing Hitler's classicist reinterpretation of German culture, was placed in charge of the proposed architectural renovations of Berlin.^[175] In 1936 Hitler opened the summer Olympic games in Berlin.

Rearmament and new alliances[link]

In a meeting with German military leaders on 3 February 1933, Hitler spoke of "conquest for Lebensraum in the East and its ruthless Germanisation" as his ultimate foreign policy objectives.^[176] In March, Prince Bernhard Wilhelm von Bülow, secretary at the Auswärtiges Amt (Foreign Office), issued a major statement of German foreign policy aims: Anschluss with Austria, the restoration of Germany's national borders of 1914, rejection of military restrictions under the Treaty of Versailles, the return of the former German colonies in Africa, and a German zone of influence in Eastern Europe. Hitler found Bülow's goals to be too modest.^[177] In his speeches of this period, he stressed the peaceful goals of his policies and willingness to work within international agreements.^[178] At the first meeting of his Cabinet in 1933, Hitler prioritised military spending over unemployment relief.^[179]

Germany withdrew from the League of Nations and the World Disarmament Conference in October 1933.^[180] In March 1935 Hitler announced an expansion of the Wehrmacht to 600,000 members—six times the number permitted by the Versailles Treaty—including development of an Air Force (Luftwaffe) and increasing the size of the Navy (Kriegsmarine). Britain, France, Italy, and the League of Nations condemned these plans as violations of the Treaty.^[181] The Anglo-German Naval Agreement (AGNA) of 18 June 1935 allowed German tonnage to increase to 35% of that of the British navy. Hitler called the signing of the AGNA "the happiest day of his life", as he believed the agreement marked the beginning of the Anglo-German alliance he had predicted in Mein Kampf.^[182] France and Italy were not consulted before the signing, directly undermining the League of Nations and putting the Treaty of Versailles on the path towards irrelevance.^[183]

Hitler with Arthur Seyss-Inquart, Martin Bormann, Heinrich Himmler, and Reinhard Heydrich in Vienna, 1938

Germany reoccupied the demilitarised zone in the Rhineland in March 1936, in violation the Versailles Treaty. Hitler sent troops to Spain to support General Franco after receiving an appeal for help in July 1936. At the same time, Hitler continued his efforts to create an Anglo-German alliance.^[184] In response to a growing economic crisis caused by his rearmament efforts, Hitler issued a memorandum ordering Göring to carry out a Four Year Plan to prepare Germany for war within the next four years.^[185] The "Four-Year Plan Memorandum" of August 1936 envisaged an all-out struggle between "Judeo-Bolshevism" and German national socialism, which in Hitler's view required a committed effort of rearmament regardless of the economic costs.^[186]

Count Galeazzo Ciano, foreign minister of Benito Mussolini's government, declared an axis between Germany and Italy, and on 25 November, Germany signed the Anti-Comintern Pact with Japan. Britain, China, Italy, and Poland were also invited to join the Anti-Comintern Pact, but only Italy signed in 1937. Hitler abandoned his dream of an Anglo-German alliance, blaming "inadequate" British leadership.^[187] At a secret meeting in the Reich Chancellery with his foreign ministers and military chiefs that November, Hitler stated his intention of acquiring Lebensraum ("living space") for the German people. He ordered preparations for war in the east, to begin as early as 1938 and no later than 1943. He stated that the conference minutes, recorded as the Hossbach Memorandum, were to be regarded as his "political testament" in the event of his death.^[188] He felt the German economic crisis had reached a point that a severe decline in living standards in Germany could only be stopped by a policy of military aggression—seizing Austria and Czechoslovakia.^[189][190] Hitler urged quick action, before Britain and France obtained a permanent lead in the arms race.^[189] In early 1938, in the wake of the Blomberg–Fritsch Affair, Hitler asserted control of the military-foreign policy apparatus, dismissing Neurath as Foreign Minister and appointing himself Oberster Befehlshaber der Wehrmacht (supreme commander of the armed forces).^[185] From early 1938 onwards, Hitler was carrying out a foreign policy ultimately aimed at war.^[191]

The Holocaust[link]

If the international Jewish financiers outside Europe should succeed in plunging the nations once more into a world war, then the result will not be the bolshevisation of the earth, and thus the victory of Jewry, but the annihilation of the Jewish race in Europe!^[192]

— Adolf Hitler addressing the German Reichstag, 30 January 1939

A main Nazi concept was the notion of racial hygiene. On 15 September 1935, Hitler presented two laws—known as the Nuremberg Laws—to the Reichstag. The laws banned marriage between non-Jewish and Jewish Germans, and forbade the employment of non-Jewish women under the age of 45 in Jewish households. The laws deprived so-called "non-Aryans" of the benefits of German citizenship.^[193] Hitler's early eugenic policies targeted children with physical and developmental disabilities in a programme dubbed Action Brandt, and later authorized a euthanasia programme for adults with serious mental and physical handicaps, now usually referred to as Action T4.^[194]

Hitler's idea of Lebensraum, espoused briefly in Mein Kampf, focused on acquiring new territory for German settlement in Eastern Europe.^[195] The Generalplan Ost ("General Plan for the East") called for the population of occupied Eastern Europe and the Soviet Union to be deported to West Siberia, used as slave labour, or murdered;^[196] the conquered territories were to be colonised by German or "Germanised" settlers.^[197] The original plan called for this process to begin after the conquest of the Soviet Union, but when that failed to happen, Hitler moved the plans forward.^[196][198] By January 1942 the decision had been taken to kill the Jews and other deportees considered undesirable.^[199]

A wagon piled high with corpses outside the crematorium in the newly liberated Buchenwald concentration camp (April 1945)

The Holocaust (the "Endlösung der jüdischen Frage" or "Final Solution of the Jewish Question") was organised and executed by Heinrich Himmler and Reinhard Heydrich. The records of the Wannsee Conference—held on 20 January 1942 and led by Heydrich, with fifteen senior Nazi officials participating—provide the clearest evidence of systematic planning for the Holocaust. On 22 February Hitler was recorded saying to his associates, "we shall regain our health only by eliminating the Jews".^[200] Approximately thirty Nazi concentration camps and extermination camps were used for this purpose.^[201] By summer 1942 Auschwitz concentration camp was rapidly expanded to accept large numbers of deportees for killing or enslavement.^[202]

Although no specific order from Hitler authorising the mass killings has surfaced,^[203] he approved the Einsatzgruppen—killing squads that followed the German army through Poland, the Baltic, and the Soviet Union^[204]—and he was well informed about their activities.^[205] During interrogations by Soviet intelligence officers, the records of which were declassified over fifty years later, Hitler's valet, Heinz Linge, and his adjutant, Otto Günsche, stated that Hitler had a direct interest in the development of gas chambers.^[206]

Between 1939 and 1945, the SS, assisted by collaborationist governments and recruits from occupied countries, were responsible for the deaths of eleven to fourteen million people, including about six million Jews, representing two-thirds of the Jewish population in Europe,^[207][208] and between 500,000 and 1,500,000 Roma.^[209] Deaths took place in concentration and extermination camps, ghettos, and through mass executions. Many victims of the Holocaust were gassed to death, whereas others died of starvation or disease while working as slave labourers.^[210]

Hitler's policies also resulted in the killings of Poles^[211] and Soviet prisoners of war, communists and other political opponents, homosexuals, the physically and mentally disabled,^[212][213] Jehovah's Witnesses, Adventists, and trade unionists. Hitler never appeared to have visited the concentration camps and did not speak publicly about the killings.^[214]

World War II[link]

Early diplomatic successes[link]

Alliance with Japan[link]

Hitler and the Japanese Foreign Minister, Yōsuke Matsuoka, at a meeting in Berlin in March 1941. In the background is Joachim von Ribbentrop.

In February 1938, on the advice of his newly appointed Foreign Minister, the strongly pro-Japanese Joachim von Ribbentrop, Hitler ended the Sino-German alliance with the Republic of China to instead enter into an alliance with the more modern and powerful Japan. Hitler announced German recognition of Manchukuo, the Japanese-occupied state in Manchuria, and renounced German claims to their former colonies in the Pacific held by Japan.^[215] Hitler ordered an end to arms shipments to China and recalled all German officers working with the Chinese Army.^[215] In retaliation, Chinese General Chiang Kai-shek cancelled all Sino-German economic agreements, depriving the Germans of many Chinese raw materials, though they did continue to ship tungsten, a key metal in armaments production, through to 1939.^[216]

Austria and Czechoslovakia[link]

On 12 March 1938 Hitler declared unification of Austria with Nazi Germany in the Anschluss.^[217][218] Hitler then turned his attention to the ethnic German population of the Sudetenland district of Czechoslovakia.^[219]

On 28–29 March 1938 Hitler held a series of secret meetings in Berlin with Konrad Henlein of the Sudeten Heimfront (Home Front), the largest of the ethnic German parties of the Sudetenland. The men agreed that Henlein would demand increased autonomy for Sudeten Germans from the Czechoslovakian government, thus providing a pretext for German military action against Czechoslovakia. In April 1938 Henlein told the foreign minister of Hungary that "whatever the Czech government might offer, he would always raise still higher demands ... he wanted to sabotage an understanding by all means because this was the only method to blow up Czechoslovakia quickly".^[220] In private, Hitler considered the Sudeten issue unimportant; his real intention was a war of conquest against Czechoslovakia.^[221]

October 1938: Hitler (standing in the Mercedes) drives through the crowd in Cheb (German: Eger), part of the German-populated Sudetenland region of Czechoslovakia, which was annexed to Nazi Germany due to the Munich Agreement

In April 1938 Hitler ordered the OKW to prepare for Fall Grün ("Case Green"), the code name for an invasion of Czechoslovakia.^[222] As a result of intense French and British diplomatic pressure, on 5 September 1938 Czechoslovakian President Edvard Beneš unveiled the "Fourth Plan" for constitutional reorganisation of his country, which agreed to most of Henlein's demands for Sudeten autonomy.^[223] Henlein's Heimfront responded to Beneš' offer with a series of violent clashes with the Czechoslovakian police that led to the declaration of martial law in certain Sudeten districts.^[224][225]

From left to right: Chamberlain, Daladier, Hitler, Mussolini, and Ciano, pictured before signing the Munich Agreement, which gave the Sudetenland to Germany

Germany was dependent on imported oil; a confrontation with Britain over the Czechoslovakian dispute could curtail Germany's oil supplies. Hitler called off Fall Grün, originally planned for 1 October 1938.^[226] On 29 September 1938 Hitler, Neville Chamberlain, Édouard Daladier, and Benito Mussolini attended a one-day conference in Munich that led to the Munich Agreement, which handed over the Sudetenland districts to Germany.^[227][228]

Chamberlain was satisfied with the Munich conference, calling the outcome "peace for our time", while Hitler was angered about the missed opportunity for war in 1938;^[229][230] he expressed his disappointment in a speech on 9 October 1938 in Saarbrücken.^[231] In Hitler's view, the British-brokered peace, although favourable to the ostensible German demands, was a diplomatic defeat which spurred his intent of limiting British power to pave the way for the eastern expansion of Germany.^[232][233] As a result of the summit, Hitler was selected Time magazine's Man of the Year for 1938.^[234]

Jewish shops destroyed in Magdeburg, following Kristallnacht (November 1938)

Hitler visits Prague Castle shortly after the occupation of Czechoslovakia, 15 March 1939

In late 1938 and early 1939, the continuing economic crisis caused by rearmament forced Hitler to make major defence cuts.^[235] In his "Export or die" speech of 30 January 1939, he called for an economic offensive to increase German foreign exchange holdings to pay for raw materials such as high-grade iron needed for military weapons.^[235]

On 15 March 1939, in violation of the Munich accord and possibly as a result of the deepening economic crisis requiring additional assets,^[236] Hitler ordered the Wehrmacht to invade Prague, and from Prague Castle proclaimed Bohemia and Moravia a German protectorate.^[237]

Start of World War II[link]

In private discussions in 1939, Hitler described Britain as the main enemy to be defeated. In his view, Poland's obliteration as a sovereign nation was a necessary prelude to that goal. The eastern flank would be secured and land would be added to Germany's Lebensraum.^[238] Hitler wanted Poland to become either a German satellite state or be otherwise neutralised to secure the Reich's eastern flank, and to prevent a possible British blockade.^[239] Initially, Hitler favoured the idea of a satellite state; this was rejected by the Polish government. Therefore, Hitler decided to invade Poland; he made this the main German foreign policy goal of 1939.^[240] Hitler was offended by the British "guarantee" of Polish independence issued on 31 March 1939, and told his associates that "I shall brew them a devil's drink".^[241] In a speech in Wilhelmshaven for the launch of the battleship Tirpitz on 1 April 1939, Hitler threatened to denounce the Anglo-German Naval Agreement if the British persisted with their guarantee of Polish independence, which he perceived as an "encirclement" policy.^[241] On 3 April 1939 Hitler ordered the military to prepare for Fall Weiss ("Case White"), the plan for an invasion of Poland on 25 August 1939.^[240] In a speech before the Reichstag on 28 April he renounced both the Anglo-German Naval Agreement and the German–Polish Non-Aggression Pact. In August Hitler told his generals that his original plan for 1939 was to "... establish an acceptable relationship with Poland in order to fight against the West". Since Poland refused to become a German satellite, Hitler stated his only option was the invasion of Poland.^[242] Historians such as William Carr, Gerhard Weinberg, and Ian Kershaw have argued that one reason for Hitler's rush to war was his morbid and obsessive fear of an early death, and hence his feeling that he did not have long to accomplish his work.^{[243][244][245]}

Hitler portrayed on a 42 pfennig stamp from 1944. The term Grossdeutsches Reich (Greater German Reich) began to be used in 1943 for the expanded Germany under his rule.

Hitler was concerned that a military attack against Poland could result in a premature war with Britain.^[239][246] However, Hitler's foreign minister—and former Ambassador to London—Joachim von Ribbentrop assured him that neither Britain nor France would honour their commitments to Poland, and that a German–Polish war would only be a limited regional war.^[247][248] Ribbentrop claimed that in December 1938 the French foreign minister, Georges Bonnet, had stated that France considered Eastern Europe as Germany's exclusive sphere of influence;^[249] Ribbentrop showed Hitler diplomatic cables that supported his analysis.^[250] The German Ambassador in London, Herbert von Dirksen, supported Ribbentrop's analysis with a dispatch in August 1939, reporting that Chamberlain knew "the social structure of Britain, even the conception of the British Empire, would not survive the chaos of even a victorious war", and so would back down.^[248] Accordingly, on 21 August 1939 Hitler ordered a military mobilisation against Poland.^[251]

Hitler's plans for a military campaign in Poland in late August or early September required tacit Soviet support.^[252] The non-aggression pact (the Molotov-Ribbentrop Pact) between Germany and the Soviet Union, led by Joseph Stalin,^[253] included secret protocols with an agreement to partition Poland between the two countries. In response to the Molotov-Ribbentrop Pact—and contrary to the prediction of Ribbentrop that the newly-formed pact would sever Anglo-Polish ties—Britain and Poland signed the Anglo-Polish alliance on 25 August 1939. This, along with news from Italy that Mussolini would not honour the Pact of Steel, caused Hitler to postpone the attack on Poland from 25 August to 1 September.^[254] In the days before the start of the war, Hitler tried to manoeuvre the British into neutrality by offering a non-aggression guarantee to the British Empire on 25 August and by having Ribbentrop present a last-minute peace plan with an impossibly short time limit in an effort to then blame the war on British and Polish inaction.^[255][256]

As a pretext for a military aggression against Poland, Hitler claimed the Free City of Danzig and the right to extraterritorial roads across the Polish Corridor, which Germany had ceded under the Versailles Treaty.^[257] Despite his concerns over a possible British intervention, Hitler was ultimately not deterred from his aim of invading Poland,^[258] and on 1 September 1939 Germany invaded western Poland. In response, Britain and France declared war on Germany on 3 September. This surprised Hitler, prompting him to turn to Ribbentrop and angrily ask "Now what?"^[259] France and Britain did not act on their declarations immediately, and on 17 September, Soviet forces invaded eastern Poland.^[260]

Poland never will rise again in the form of the Versailles treaty. That is guaranteed not only by Germany, but also ... Russia.

—Adolf Hitler, public speech in Danzig at the end of September 1939^[261]

Members of the Reichstag salute Hitler at the Kroll Opera House on 6 October 1939, at the end of the campaign against Poland

The fall of Poland was followed by what contemporary journalists dubbed the "Phoney War" or Sitzkrieg ("sitting war"). Hitler instructed the two newly-appointed Gauleiters of north-western Poland, Albert Forster of Reichsgau Danzig-West Prussia and Arthur Greiser of Reichsgau Wartheland, to "Germanise" their areas, and promised them "There would be no questions asked" about how this was accomplished.^[262] To Himmler's chagrin, Forster had local Poles sign forms stating that they had German blood, and required no further documentation.^[263] On the other hand, Greiser carried out a brutal ethnic cleansing campaign on the Polish population in his purview.^[262] Greiser complained to Hitler that Forster was allowing thousands of Poles to be accepted as "racial" Germans and thus, in Greiser's view, endangering German "racial purity". Hitler told Himmler and Greiser to take up their difficulties with Forster, and not to involve him.^[262] Hitler's handling of the Forster–Greiser dispute has been advanced as an example of Kershaw's theory of "working towards the Führer": Hitler issued vague instructions and expected his subordinates to work out policies on their own.

Another dispute broke out between different factions. One side, represented by Himmler and Greiser, championed carrying out ethnic cleansing in Poland, and another side, represented by Göring and Hans Frank, Governor-General of the General Government territory of occupied Poland, called for turning Poland into the "granary" of the Reich.^[264] At a conference held at Göring's Karinhall estate on 12 February 1940, the dispute was initially settled in favour of the Göring–Frank view of economic exploitation, which ended the economically disruptive mass expulsions.^[264] On 15 May 1940, however, Himmler presented Hitler with a memo entitled "Some Thoughts on the Treatment of Alien Population in the East", which called for expulsion of the entire Jewish population of Europe into Africa and reducing the remainder of the Polish population to a "leaderless class of labourers".^[264] Hitler called Himmler's memo "good and correct";^[264] and, ignoring Göring and Frank, implemented the Himmler–Greiser policy in Poland.