The Great Santini (1979)

Factual error: When Santini is reporting into Beaufort, he refers to the Marine behind the desk as "sergeant." However, the rank on the Marine's sleeve indicates he is a Master Gunnery Sergeant. Unlike in the Army, referring to any rank other than E-5 as "sergeant" is considered an insult in the Marine Corps, and no Marine would ever refer to a Master Gunnery Sergeant as "sergeant." The proper form of address would be "Master Guns," "Master Gunny" or "Top."

Bull Meechum: I am Santini, the Great Santini.
Bull Meechum: I come from behind the moon, out of the dark, unannounced.
Bull Meechum: Watch out.

Trivia: Although Blythe Danner plays Michael O'Keefe and Lisa Jane Persky's mother in the film, she is only 12 years older than them.