Over 500,000
The American Military pulled the troops out of Vietnam because of political pressure on the home front.
Kennedy was asked to send additional troops to Vietnam. He sent additional troops and military advisors over to Vietnam to help.
First ground troops were sent to Vietnam in 1965.
There were not any troops in Vietnam during the Kennedy administration. Just 500 military advisors. Kennedy was assassinated before we sent troops
to increase the number of American troops and bombing campaigns in Vietnam.
At first he sent in about 50 military advisors. Later, he expanded this to more "advisors" and even military troops.
It was president Richard Nixon who finally pulled all U.S troops from Vietnam.
Nearly ALL operations involved US personnel.
When President Nixon took office there was approximately 536,100 American troops in Vietnam. President Nixon immediately started reducing the number of troops in Vietnam.
Military advisors first arrived in Vietnam in 1950. America started sending troops into Vietnam as early as 1960, but they took no military action until 1965. The United States was actively (militarily) involved in the Vietnam War from 1965 to 1975.
The peak US troop strength in Vietnam, of 543,482, was achieved on April 30, 1969.
US troops first took offensive actions in battleground in 1965. However military advisers were involved since 1950.