When Klinger is talking to Hawkeye in the officer's club, his hands keep changing places.
At the end when they are sitting in the mess tent, Margaret's cup has its handle facing to the left, but in the next scene, it is facing to the right.
Throughout the episode, Loretta Swit's fingernails are over an inch long. No nurse, especially a head nurse, would have fingernails that long.
When Hawkeye and BJ walk into the swamp and first mention Maj. Burnham to Charles, the boom mic can be briefly seen popping down from the top of the tent.
In a discussion with B.J. in the shower, Hawkeye wonders if he would be named Chief Surgeon if chosen for the new unit. B.J. responds that if Hawkeye were chosen then he would be named Chief Surgeon of the 4077. In actuality, the title would go to Major Winchester. Hawkeye was chosen as Chief Surgeon in Season 1, Episode 4, by Col. Blake, due to Hawkeye being a better surgeon than Frank Burns. The title was never revoked, either when Col. Potter arrived or when Burns left.