War crimes are serious violations of the laws applicable in armed conflict (also known as international humanitarian law) giving rise to individual criminal responsibility. Examples of such conduct include "murder, the ill-treatment or deportation of civilian residents of an occupied territory to slave labor camps", "the murder or ill-treatment of prisoners of war", the killing of prisoners, "the wanton destruction of cities, towns and villages, and any devastation not justified by military, or civilian necessity".

Similar concepts, such as perfidy, have existed for many centuries as customs between civilized countries, but these customs were first codified as international law in the Hague Conventions of 1899 and 1907. The modern concept of a war crime was further developed under the auspices of the Nuremberg Trials based on the definition in the London Charter that was published on August 8, 1945. (Also see Nuremberg Principles.) Along with war crimes the charter also defined crimes against peace and crimes against humanity, which are often committed during wars and in concert with war crimes.

Francis Anthony Boyle (born 1950) is a professor of international law at the University of Illinois College of Law. Boyle received a A.B. (1971) in Political Science from the University of Chicago, then a J.D. degree magna cum laude from Harvard Law School, and A.M. and Ph.D. degrees in Political Science from Harvard University. He also practiced tax and international tax with Bingham, Dana & Gould.

Boyle serves as counsel to Bosnia and Herzegovina and to the Provisional Government of the Palestinian Authority. He also represents two associations of citizens within Bosnia and was involved in developing the indictment against Slobodan Milosevic for committing genocide, crimes against humanity, and war crimes in Bosnia and Herzegovina. Over his career, he has represented national and international bodies including the Blackfoot Nation (Canada), the Nation of Hawaii, and the Lakota Nation, as well as numerous individual death penalty and human rights cases. He has advised numerous international bodies in the areas of human rights, war crimes and genocide, nuclear policy, and bio-warfare. From 1991-92, Boyle served as Legal Advisor to the Palestinian Delegation to the Middle East Peace Negotiations. He also served on the Board of Directors of Amnesty International, as a consultant to the American Friends Service Committee, and on the Advisory Board for the Council for Responsible Genetics. He drafted the U.S. domestic implementing legislation for the Biological Weapons Convention, known as the Biological Weapons Anti-Terrorism Act of 1989, that was approved unanimously by both Houses of the U.S. Congress and signed into law by President George H.W. Bush.

 Josef Rudolf Mengele (help·info) (German pronunciation: [ˈjoːzɛf ˈʁuːdɔlf ˈmɛŋɡələ], March 16, 1911 – February 7, 1979), also known as the Angel of Death (German: Todesengel) was a German SS officer and a physician in the Nazi concentration camp Auschwitz. He earned doctorates in anthropology from Munich University and in medicine from Frankfurt University. He initially gained notoriety for being one of the SS physicians who supervised the selection of arriving transports of prisoners, determining who was to be killed and who was to become a forced laborer, but is far more infamous for performing human experiments on camp inmates, including children, for which Mengele was called the "Angel of Death". Mengele wrote, "I personally have not killed, injured or caused bodily harm to anyone."

In 1940, he was placed in the reserve medical corps, after which he served with the 5th SS Panzergrenadier Division Wiking in the Eastern Front. In 1942, he was wounded at the Soviet front and was pronounced medically unfit for combat, and was then promoted to the rank of SS-Hauptsturmführer (Captain) for saving the lives of three German soldiers. He survived the war, and after a period living incognito in Germany he fled to South America, where he became an abortionist and evaded capture for the rest of his life despite being hunted as a Nazi war criminal.

Ronald Ernest "Ron" Paul (born August 20, 1935) is an American politician who has been the U.S. Representative for Texas's 14th congressional district, which includes Galveston, since 1997, and a three-time candidate for President of the United States, as a Libertarian in 1988 and as a Republican in 2008 and currently 2012. He is an outspoken critic of American foreign and monetary policies, including the Military–industrial complex and the Federal Reserve, and is known for his libertarian-leaning views, often differing from his own party on certain issues.

A native of Pittsburgh, Pennsylvania, Paul is a graduate of Gettysburg College and Duke University School of Medicine, where he earned his medical degree. He served as a medical officer in the United States Air Force from 1963 until 1968. He worked as an obstetrician-gynecologist from the 1960s to the 1980s, delivering more than 4,000 babies. He became the first Representative in history to serve concurrently with a child in the Senate when his son Rand Paul was elected to the United States Senate for Kentucky in 2010.

Hans Georg Heer (known as Hannes) (born 16 March 1941 in Wissen, Rhine Province) is a controversial German historian, chiefly known for the "Wehrmachtsausstellung" (German Army Exhibition) in the 1990s, an exhibition that was withdrawn in 1999 after facing severe criticism from, among others, Polish historian Bogdan Musial and military historian Rolf-Dieter Müller, for being politically motivated, lacking in scientific method and "deliberately misleading."

As a student, he became a member of the far-left Sozialistischer Deutscher Studentenbund, where he was a leading member of the communist faction that supported the banned Communist Party of Germany. In the 1970s he was several times criminally convicted of coercion,trespassing, vandalism and other criminal offenses. Being considered a political extremist according to the Radikalenerlass, he was banned from employment in the public service and could not work as a teacher.