Corrected entry: In the pilot episode, the MASH unit holds the raffle to send Ho Jon to medical school. In the rest of the series, Ho Jon is still at the MASH unit.
Corrected entry: Season 1 Episode 1 "M*A*S*H - The Pilot". Hammond calls Margaret "Hotlips" and Hawkeye and Trapper react as if it is the first time they have heard the nickname. However, Hawkeye called her this earlier on at the beginning of The Party. (00:21:30)
Correction: They were surprised the General knew her nickname, which was created in the movie after the two Majors "enjoyed" themselves.
Correction: According to IMDb character Ho Jon last appeared in "Ceasefire" aired 3/18/1973 in the second to the last episode of the first season. This would make sense for him to attend classes the following Fall term as in incoming freshman.
OneHappyHusky