When it comes to pop-culture allure and romanticized brutality, Stanley Kubrick’s “Full Metal Jacket” is arguably the most influential of all Vietnam War movies. R. Lee Ermey’s iconic portrayal of the sadistic Gunnery Sgt. Hartman has served as a de facto recruiting mechanism for the Marines since the film’s release in 1987. I remember watching the same VHS copy of “Full Metal Jacket” about a hundred times before I enlisted as a Marine combat correspondent, choosing the same military specialty as Private Joker. During the 10 years I served in the Corps, it was a rare occasion to find a Marine who didn’t love the film.