Tour of duty is an American drama television series on CBS which ran from September 1987 to April 1990. The show follows an American infantry platoon on a tour of duty during the Vietnam War. It was the first television series to regularly show Americans in combat in Vietnam and was one of several similarly-themed series to be produced in the wake of the acclaimed Oliver Stone film, Platoon. The show was created by Steve Duncan and L. Travis Clark, and produced by Zev Braun. It ran for three seasons as 58 one hour episodes.