Lt. William L. Calley, Jr., pictured during his court martial at Fort Benning, Ga., on April 23, 1971. Calley, who as an Army lieutenant led the U.S. soldiers who killed hundreds of Vietnamese civilians in the My Lai massacre, the most notorious war crime in modern American military history, died on April 28 at a hospice center in Gainesville, Fla., The Washington Post reported Monday July 29, 2024, citing his death certificate. He was 80. (APPhoto/Joe Holloway, Jr., File)