<Li> Winter Soldier Investigation </Li> <Li> Vietnam War Crimes Working Group </Li> <P> The Mỹ Lai Massacre (/ ˌmiːˈlaɪ /; Vietnamese: Thảm sát Mỹ Lai, (thâːm ʂǎːt mǐˀ lāːj) (listen)) was the Vietnam War mass murder of unarmed Vietnamese civilians by U.S. troops in South Vietnam on 16 March 1968 . Between 347 and 504 unarmed people were massacred by the U.S. Army soldiers from Company C, 1st Battalion, 20th 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 . 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 . </P> <P> The massacre, which was later called "the most shocking episode of the Vietnam War", took place in two hamlets of Sơn Mỹ village in Quảng Ngãi Province . These hamlets were marked on the U.S. Army topographic maps as Mỹ Lai and Mỹ Khê . </P>

Where did a massacre occur on march 16 1968