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.
During the defining months of the offensive against Germany, American forces faced a moral and strategic dilemma.
An American Communist family that had fled to Moscow in the late 1920s, return to America in 1935 but can not bring their 5-year-old son.
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.
The Alaskan Highway stands today as one of the boldest homeland security initiatives ever undertaken.
In the early 1830s, Texas, ruled by Mexico, held 20,000 U.S. settlers and 4,000 Mexican Tejanos, forcing residents to pick sides.
Robert E. Lee, the leading Confederate general of the American Civil War, remains a source of fascination and, for some, veneration.
His stunning triumph at the 1936 Olympic Games captivated the world even as it infuriated the Nazis. Premiering May 1.
A brilliant scientist, Oppenheimer was tasked with the development of the atomic bomb during World War II.