The Vietnam War took place.
The Paris Peace Accords , officially titled the Agreement on Ending the War and Restoring Peace in Vietnam , was a peace treaty signed on January 27 , 1973 to establish peace in Vietnam and end the Vietnam War . The Vietnam War ( Chiến tranh Việt Nam ) , also known as the Second Indochina War , and known in Vietnam as Resistance War Against America ( Kháng chiến chống Mỹ ) 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 . Gradual withdrawal of U.S. ground forces began as part of `` Vietnamization '' , which aimed to end American involvement in the war while transferring the task of fighting the communists to the South Vietnamese themselves . Vietnamization of the war was a policy of the Richard Nixon administration to end U.S. involvement in the Vietnam War through a program to `` expand , equip , and train South Vietnam 's forces and assign to them an ever-increasing combat role , at the same time steadily reducing the number of U.S. combat troops . ''