Pvt. Joker: How can you shoot innocent women and children like that?
Helicopter gunner: It's easy. You just don't lead them as much. You see, anyone that runs, is V.C. Anyone that stands still is well disciplined V.C. Ain't war hell?
In the opening scene, Gunnery Sgt. Hartman is making his speech and passes by Privates Cowboy and Joker on his way to the other side of the barracks. On his way he passes Private Pyle standing to the right of Private Joker. Later in the scene, when he rushes over to confront Private Joker and then moves on to Private Cowboy and then Private Pyle, Private Pyle is on the left of Private Joker.
Ermey was convinced that the scenes in boot camp wouldn't be believable unless the actors were actually frightened of him. So the other actors in the film only saw him as the Gunny Hartman character. He never spoke, ate, or fraternized with any of them unless it was during a scene. 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.