France agreed to withdraw its troops
It was unwinnable.
Begining in 1954, following their defeat at Dien Bien Phu with all French forces to be out of the country by April of 1956.
The newly elected Gough Whitlam recognized North Vietnam and gave the order to withdraw Australian troops, in the short.
President Nixon was the President who promised to withdraw troops from Vietnam. The term Vietnamization was the plan that encouraged South Vietnam to take more responsibility for the war. Nixon hoped to gradually withdraw troops in this manner, and he succeeded and is credited with ending the Vietnam War.
People in the United States who wanted to withdraw from Vietnam were generally known as "doves". They called their opponents "hawks".
President Gerald Ford had all Americans out of Vietnam by May 1975.
South Vietnam was overrun by communist forces.