The first appearance of Corporal Maxwell Q. Klinger.
In this episode Hawkeye is named as the Chief Surgeon for the unit. In the original movie, M*A*S*H (1970), Trapper John was the Chief Surgeon.
This episode was to feature Jamie Farr as a one-off character, Cpl. Klinger. The character was a hit, and Farr was brought back for several recurring appearances. By the end of the series, Klinger was a regular.
Guest star Sorrell Booke actually served in the Korean War as a counterintelligence officer and spoke 5 languages.
In the TV series Hawkeye is named the Chief Surgeon and later revealed to be a chest cutter, both traits belonged to Trapper in the novel and movie, this was a part of the reason behind Wayne Rogers departure as he felt that all the unique traits that Trapper had were being given to Hawkeye and that his role was not that of a equal lead but of a sidekick.