During the American Civil War, Francis Lieber, professor of Columbia College in New York, prepared a document to codify the laws of war. This document was "revised by a board officers and promulgated" by President
Abraham Lincoln. Although the document was only binding for the U.S. military forces, the "
Lieber instructions" "strongly influenced the further codification of the laws of war and the adoption of similar regulations by other states." According to Schindler and Toman, they contributed to "international convention on the laws of war presented to the Brussels Conference in 1874 and stimulated the adoption of The Hague Conventions on land warfare of 1899 and 1907." Colonel
Franklin Brooke Nihart,
USMC, worked at Marine Corps headquarters throughout the summer of 1955, outlined his ideas in longhand and the Code of Conduct was established with the issuance of
Executive Order 10631 by
President Dwight D. Eisenhower on 17 August 1955 which stated, "Every member of the Armed Forces of the United States are expected to measure up to the standards embodied in the Code of Conduct while in combat or in captivity." It has been modified twice—once in 1977 by President
Jimmy Carter in
Executive Order 12017, and most recently in President
Ronald Reagan's Executive Order 12633 of March 1988, which amended the code to make it
gender-neutral. Notably, the code prohibits
surrender except when "all reasonable means of resistance [are] exhausted and...certain death the only alternative," enjoins captured Americans to "resist by all means available" and "
make every effort to escape and aid others," and bars the acceptance of
parole or special favors from enemy forces. The code also outlines proper conduct for American prisoners of war, reaffirms that under the Geneva Conventions prisoners of war should give "name,
rank,
service number, and
date of birth" and requires that under
interrogation captured military personnel should "evade answering further questions to the utmost of [their] ability." The Army and Marine Corps issued "clear explanations and guidance for the 429 articles of the Geneva Conventions" in 2020. == Korean War and POW ==