Full Metal Jacket (1987)

Continuity mistake: When Gomer Pyle is in the toilet with his rifle and after shooting the drill instructor, Pyle sits down on the fourth toilet seat from the back of the room. In the next shot where Pyle kills himself, he is sitting on the third toilet seat. You can see this already from the front shot of Pyle when he kills himself because there is a rise in the wall next to the third seat, which is visible through the whole scene. It is more obvious in the following shot where you can see the row of toilet seats and Pyle sitting dead on the third one. (00:43:00 - 00:43:35)

Gunnery Sergeant Hartman: You had best un-fuck yourself or I will unscrew your head and shit down your neck!

Trivia: Ermey was convinced that the scenes in boot camp wouldn't be believable unless the actors were actually frightened of him. According to the commentary on the blu-ray, when he was acting as the technical adviser and training them to drill, or whatever he was training them to do, he never raised his voice. As soon as the camera was rolling, he started screaming at the actors. Much to Ermey's pleasure, the fear you see on the screen is real. Many times in the shooting the actors would become so flustered by Ermey that they would blow their lines. Ermey recalls that he's seen the other actors in the film around Hollywood from time to time, and they still won't speak to him.

Question: Who's idea was it, or the reason, Kubrick decided to kill off Gunnery Sergeant Hartman? Was it to merely show the casualty of war?