This chart represents the Italian Army rank insignia used on the slip-on of winter service uniforms. The color of the uniforms is khaki.

Officers who are assigned to a position acting in a higher rank than their own wear the insignia of the higher rank but the highest star of the insignia is trimmed in red enamel. Similarly, an officer temporarily assigned to a position attaining a higher rank in the absence of the incumbent officer, wear the star in bronze colour.

As can be seen, the Italian rank system has a large number of junior NCO ranks. Several ranks (which are variations on corporal) have a "chosen" version of the rank, "chosen" having the same sense of "leading", as in the historic British Army appointment of "chosen man" (now called lance-corporal).

Italian Army officers used to wear the ranks on the sleeve, like naval officers. Since 1946, insignia were changed in order to align with NATO regulations. In 1973 the system had the following slight change: the wreath was added to the stars for general officers, instead of the silver epaulette; the crown was added to the stars for field officers, instead of a gold band on the edge of the epaulette; the stars began to be placed near the edge of the epaulette instead of in the center. These changes were mostly intended to make insignia more easily recognizable on the field uniform.

Armies have military rank systems that are often used by other military services such as air forces or marines.

To aid in the comparison of ranks in the armed forces of different countries, NATO rank codes are used. These are established codes for determining the seniority of officer and other ranks in NATO countries for a particular joint task group or command structure, although specific appointments designate a higher level of seniority over other equivalent rank codes in a given situation. Officer ranks go from OF-1 (applying to all subaltern officers below captain) up to OF-10; OF(D) being a special category for trainee officers awaiting a commission. Other Ranks (those considered enlisted men in the United States forces) are classified from OR-1 to OR-9. Warrant Officers in the United States forces are a special case as they are single track career specialists between the enlisted and officer ranks in terms of seniority, and have no NATO rank code. The system should not be confused with the pay grades used in the US military. While countries outside the NATO command structure do not strictly fall into this classification structure and there may be incidences of overlap (particularly in OR ranks between countries), the codes still provide a useful gauge in determining what ranks are broadly equivalent.

The Italian Army (Esercito Italiano) is the ground defence force of the Italian Armed Forces. It is an all-volunteer force of active-duty personnel, numbering 108,355 in 2010. Its best-known combat vehicles are the Dardo infantry fighting vehicle, the Centauro tank destroyer and the Ariete tank, and among its aircraft the Mangusta attack helicopter, recently deployed in UN missions. The headquarters of the Army General Staff are located in Rome, opposite the Presidential Palace.

The army's history dates back to the unification of Italy in the 1850s and 1860s. The army fought in colonial engagements in China, Libya (1911), northern Italy against the Austro-Hungarian Empire during World War I, Abyssinia before World War II, and in World War II in Albania, Greece, north Africa, Russia and Italy itself. During the Cold War the army prepared itself to defend against a Warsaw Pact invasion from the east. Since the end of the Cold War the army has seen extensive peacekeeping service and combat in Afghanistan and Iraq.

World War I (WWI), which was predominantly called the World War or the Great War from its occurrence until 1939 (World War II), and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918. It involved all the world's great powers, which were assembled in two opposing alliances: the Allies (based on the Triple Entente of the United Kingdom, France and Russia) and the Central Powers (originally centred around the Triple Alliance of Germany, Austria-Hungary and Italy; but, as Austria–Hungary had taken the offensive against the agreement, Italy did not enter into the war). These alliances both reorganised (Italy fought for the Allies), and expanded as more nations entered the war. Ultimately more than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history. More than 9 million combatants were killed, largely because of enormous increases in lethality of weapons, thanks to new technology, without corresponding improvements in protection or mobility. It was the sixth-deadliest conflict in world history, subsequently paving the way for various political changes such as revolutions in the nations involved.