The Mỹ Lai massacre (/ˌmiːˈlaɪ/; Vietnamese: Thảm sát Mỹ Lai [tʰâːm ʂǎːt mǐˀ lāːj]) was the mass murder of unarmed South Vietnamese civilians by U.S. troops in Sơn Tịnh District, South Vietnam, on March 16, 1968 during the Vietnam War. Between 347 and 504 unarmed people were killed by U.S. Army soldiers from Company C, 1st Battalion, 20th Infantry Regiment and Company B, 4th Battalion, 3rd Infantry Regiment, 11th Brigade, 23rd (Americal) Infantry Division. Victims included men, women, children, and infants. Some of the women were gang-raped and their bodies mutilated, as were children as young as 12. Twenty-six soldiers were charged with criminal offenses, but only Lieutenant William Calley Jr., a platoon leader in C Company, was convicted. Found guilty of killing 22 villagers, he was originally given a life sentence, but served only three-and-a-half years under house arrest.