Continuity mistake: When Proctor leaves the hotel room while waiting for Mahoney's "aerobics instructor" to get ready, he's supposed to be naked. However, if you look closely in the shots leading up to his getting into the elevator, you can see he's wearing a pair of light flesh-coloured briefs.
Continuity mistake: When the new recruits come off the bus at the beginning, Mahoney is talking to them through his megaphone. Towards the end of his speech, the camera angle changes and we see Mahoney standing with his arms down beside Hooks, yet we can still hear him speaking through the megaphone. How did he achieve that?
Continuity mistake: When Commandant Lassard is talking to the group in his off the first time, there's one shot out the window of a line of jogging cadets led by a person in red and they pass a group of cadets standing. The next shot out the window and the jogging cadets are in the previous position passing the standing cadets. The line is too long and there's not enough time to be a 2nd group or for them to jog around the circle driveway.