The US had military advisers in Vietnam under Kennedy, but the was did not really start for the US Johnson became President.
Richard Nixon
Eisenhower thru Ford.
The US Civil War (1861-1865) & the Vietnam War (1961-1975).
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.
When Nixon ordered "military trainers" to Vietnam, the U.S. then started to become actively involved in Vietnam combat.
In 1961 the Vietnam war started. In 1963 president kenndy was killed.
ANSWER Ho Chi Minh was the president of North Vietnam during the Vietnam War his original name was Nguyen Tat. Diem was the president of South Vietnam. Diem was assassinated Nguyen Van Thien was the president of South Vietnam after him.
Lyndon B. Johnson declared U.S entry into the war with the Gulf of Tonkin Resolution
North Vietnam started the war against South Vietnam; the US went to the aid of the South.
I think Kennedy is the answer you are seeking. Eisenhower started the US involvement in Vietnam and Kennedy sent in more people to train pilots and such .
Nguyen Thi Doan is the Vice President of Vietnam.