The Mỹ Lai Massacre was the Vietnam War mass killing of between 347 and 504 unarmed civilians in South Vietnam on this day in 1968. It was committed by U.S. Army soldiers from the Company C of the 1st Battalion, 20th Infantry Regiment, 11th Brigade of the 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 offences, 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.
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 My Lai and My Khe. The U.S. military codeword for the alleged Viet Cong stronghold in that area was Pinkville, and the carnage was initially referred to as the Pinkville Massacre. Later, when the U.S. Army started its investigation, the media changed it to the Massacre at Songmy. Currently, the event is referred to as the My Lai Massacre in the United States and called the Son My Massacre in Vietnam.
The incident prompted global outrage when it became public knowledge in November 1969. The My Lai massacre increased to some extent domestic opposition to the U.S. involvement in the Vietnam War when the scope of killing and cover-up attempts were exposed. Initially, three U.S. servicemen who had tried to halt the massacre and rescue the hiding civilians were shunned, and even denounced as traitors by several U.S. Congressmen, including Mendel Rivers, Chairman of the House Armed Services Committee. Only after thirty years were they recognized and decorated, one posthumously, by the U.S. Army for shielding non-combatants from harm in a war zone.