M*A*S*H in the trailer it was rendered as "M*A*S*H". "M*A*S*H", a spin-off of the film, ran from 1972 to 1983, more than three times as long as the war it chronicled. It starred Alan Alda as Hawkeye Pierce and Wayne Rogers as Trapper John McIntyre. After the third season, Rogers left the show and was replaced by Mike Farrell as B. J. Hunnicutt. Another change was the addition of Harry Morgan as Colonel Sherman T. Potter, a veteran character actor and former Universal contract player, who replaced McLean Stevenson the same year. This series is the most popular and best-known version
M*A*S*H (TV series) through these changes, it eventually began to run out of creative steam. Korean War doctors regularly contacted producers with experiences that they thought might make for a good storyline, only to learn the idea had previously been used. Harry Morgan admitted that he felt "the cracks were starting to show" by season 9 (1980–1981). Alda wished to make season 10 (1981-1982) "M*A*S*H"s last, but was persuaded by CBS to produce a slightly shortened 11th season, coupled with a farewell movie finale, because CBS refused to let the show go away so easily. In the end, season 11 had 15 episodes