The My Lai massacre was a controversial moment in the history of modern American combat, and was one of the events in the Vietnam war which forever tainted the American people's view of the war.
March 16, 1968- My Lai, province of Quang Ngai, Vietnam; where the massacre took place
Named as the village of Thuan Yen, the My Lai Massacre was used extensively by Tim O'Brien in "In the Lake of the Woods".