Wayne Rogers decided to leave the show because he felt that Trapper John had become more of a sidekick to Alan Alda's Hawkeye than the equals they were supposed to be. 20th Century-Fox sued Rogers, but its case collapsed when it transpired that he'd never signed his contract. The reason Rogers cited for this was an archaic "morals clause", which he wouldn't accept unless the studio signed one for him in turn.
The very first time anyone from camp is seen inside Rosie's bar.
When departing, Henry is wearing his new suit with black and white Hi-Style wing-tip shoes from the Style Right Shoe Company of Storm Lake, Iowa. These were the shoes sold by Radar in The Trial of Henry Blake (1973)
This episode marks the third appearance of Virginia Ann Lee, who originally played Young Hi in the first season episode "The Moose." She plays one of the girls who hums "America" at Colonel Blake's going away party at Rosie's.