Hi there! Is your concern the inclusion of Truman? Depending on which resource you look at, some include him and some don't. Because of his economic and military aid to the French, some people consider him the first President of the Vietnam War. I agree that it's a matter of debate, though.
United States Department of Defense has ruled that the war officially started, from a U.S. perspective, on November 1, 1955, after the U.S. took over following the French defeat at Dien Bien Phu. Truman got out of office on January 20, 1953. It official ended on April 30, 1975 under Gerald Ford.
Some say it began with the killing of Lt Colonel Peter Dewey 26 Sept 1945 and ended with the Mayaguez Incident 15 May 1975.
Some say it began with the killing of Lt Colonel Peter Dewey 26 Sept 1945 and ended with the Mayaguez Incident 15 May 1975.