When Mickey Rooney arrives at the ball with his group of hot musicians, a careful count shows only five of them (beyond Rooney himself) in the jeep. But when they are playing at the dance, there are clearly six of them (not including Rooney) -- trumpet, trombone, sax, bass, drums, and accordion.
When Lieutenant Bixby catches Hogan in his lie about the Stucky's X-ray and he is reading her the Riot-act about officers versus women and she has a choice, her little spit curl on the left side is straight and a bit frazzled. When Hogan salutes her and turns around to leave (with some facial guarded remorse), the shot now shows Bixby in the background with her spit curt perfectly replaced and back to being super cute.
The x-ray of the abdomen showing the duodenal ulcer is held up and looked at backwards each time.
The story takes place in September 1945, but all the women's clothes and hairstyles (both military and civilian) are strictly 1957, most noticeably, lack of shoulder pads, and longer skirt lengths than as in 1945.