Question: When did the vietnam war start for us?
Disambiguated questions and answers: question: When did the vietnam war start for us due to the beginning of formal U.S. military personnel assignments in Viet Nam?
When did the vietnam war start for us due to Truman sending the MAAG to Vietnam?
When did the vietnam war start for us as recognized by the Vietnam Veterans Memorial?
answer: May 1, 1950
September 1950
November 1, 1955
Natural Questions answer: 1965 (from the Wikipedia article "Vietnam War")