Good stamp.

The Vietnam War and known in Vietnam as Resistance War Against America, or simply the American War, was a war that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam and the government of South Vietnam. The North Vietnamese army was supported by the Soviet Union, China and other communist allies and the South Vietnamese army was supported by the United States, Philippines and other anti-communist allies and the war is therefore considered a Cold War-era proxy war.