1972 in the Vietnam War 1972 in the Vietnam War 1972 in the Vietnam War saw foreign involvement in South Vietnam slowly declining. Two allies, New Zealand and Thailand, which had contributed a small military contingent, left South Vietnam this year. The United States continued to participate in combat, primarily with air power to assist the South Vietnamese army, while negotiators in Paris tried to hammer out a peace agreement and withdrawal strategy for the United States. One American operation that was declassified years after the war was Operation Thunderhead, a secret mission that attempted to rescue POWs. U.S. military personnel in South Vietnam numbered
1973 in the Vietnam War by North Vietnam. Three C-141A transports flew to Hanoi, North Vietnam, and one C-9A aircraft was sent to Saigon, South Vietnam to pick up released prisoners of war. The first flight of 40 U.S. prisoners of war left Hanoi in a C-141A, later known as the "Hanoi Taxi" and now in a museum. From February 12 to April 4, there were 54 C-141 missions flying out of Hanoi, bringing the former POWs home. In Laos the government and the communist Pathet Lao signed a cease fire agreement. The agreement was violated frequently, but by the end of April most fighting