Official Army photographer Ron Haeberle traveled with Charlie Company into My Lai on March 16, 1968. The Company was told that dozens of Viet Cong troops were passing through the area, retreating from battle after the Tet Offensive. Captain Ernest Medina had told his men that all Vietnamese remaining in My Lai after their arrival would be Viet Cong members or sympathizers.
Following the massacre, during which between 347 and 504 civilians were killed, the story remained largely out of the public eye until the media published Haeberle's photographs in November 1969. These photographs would became key evidence in the Army's five-month investigation led by General William R. Peers.
The following gallery showcases a selection of Ron Haeberle's images from the My Lai Massacre as they were used in the Peers investigation.
Many of the images are violent and graphic in nature.
America's Robin Hood who robbed not only the rich but the poor and defenseless as well, always saving the treasure for himself. Part of the Wild West collection.
After the Soviet blockade of West Berlin, British and American pilots delivered tons of food and fuel to the German city by airplane for nearly a year.
During the defining months of the offensive against Germany, American forces faced a moral and strategic dilemma.
The decisions made by leaders and the escalation of bloodletting that finally ended World War II.
A revealing portrait of one of America's most paradoxical leaders.
Robert E. Lee, the leading Confederate general of the American Civil War, remains a source of fascination and, for some, veneration.
A look at five real-life "Rosies," the reality of working in defense plants during World War II and then having to give up those jobs for returning GIs.
Harry Truman was responsible for finding America's place at the start of the Cold War. Part of the award-winning Presidents collection.