What year did America join the Vietnam war?

America's involvement in the Vietnam War escalated significantly in the early 1960s, but the U.S. military presence began in the late 1950s. Officially, the United States committed combat troops in 1965, following the Gulf of Tonkin incident in August 1964, which led to Congress passing the Gulf of Tonkin Resolution. The war continued until U.S. forces withdrew in 1973.