Vietnam War

The Vietnam War pitted communist North Vietnam and the Viet Cong against South Vietnam and the United States. The war ended when U.S. forces withdrew in 1973 and Vietnam unified under Communist control two years later.

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US Infantry, VietnamThe US 173rd Airborne are supported by helicopters during the Iron Triangle assault. (Photo by © Tim Page/CORBIS/Corbis via Getty Images)

Tim Page/CORBIS/Corbis via Getty Images

US Infantry, VietnamThe US 173rd Airborne are supported by helicopters during the Iron Triangle assault. (Photo by © Tim Page/CORBIS/Corbis via Getty Images)

Tim Page/CORBIS/Corbis via Getty Images

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My Lai Massacre

My Lai Massacre

In 1968, Ron Ridenhour, an infantryman in Vietnam, wrote a letter to President Nixon detailing the murder of 500 civillians by the U.S. Army in what would come to be known as the My Lai Massacre.

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Vietnam War