United States war crimes are violations of the law of war committed by members of the United States Armed Forces after the signing of the Hague Conventions of 1899 and 1907 and the Geneva Conventions. The United States prosecutes offenders through the War Crimes Act of 1996 and articles from the Uniform Code of Military Justice (UCMJ). The United States signed the 1980 Rome Convention but never ratified the treaty, taking the position that the International Criminal Court (ICC) lacks fundamental checks and balances. The American Service-Members' Protection Act of 2002 further limited US involvement with the ICC. The ICC was conceived as a body to try war crimes when states do not have effective or reliable processes to investigate for themselves. The United States says that it has investigated many of the accusations alleged by the ICC prosecutors as having occurred in Afghanistan, and thus does not accept ICC jurisdiction over its nationals.

This article contains a chronological list of incidents in which war crimes occurred or were alleged to have occurred that include the summary execution of captured enemy combatants, the mistreatment of prisoners during interrogation, the use of torture, the use of violence against civilians and non-combatants, and the unnecessary destruction of civilian property.

Definition