Character mistake: When the Marines are navigating through the Paris Island obstacle course, Hartman is shouting "It should take you no less than 10 seconds to negotiate this obstacle!" In other words, the LONGER it takes someone to get across, the better? (00:13:27)
Character mistake: Hartman calls the "beds" bunks. Marines always refer to them as a rack.
Character mistake: When Sgt Hartman is giving the lesson about Charles Whitman, he says that he killed 12 people - in reality he killed 17.
Suggested correction: They sure did punch you. Back in '69, I got punched just like that, and I wasn't the only one to get hit.
That does not address the point - Lee Ermey himself regards Hartman as an inept drill instructor. If he did assault cadets, it was strictly against the rules, and how could he not see that Pyle was having a breakdown?