Revealing mistake: Before the first encounter with the Apache, O'Rourke Jr. is looking out for Indians hiding behind a trunk. When he is being shot at and two bullets hit the trunk you see tiny volcanos erupt which obviously have been filled with explosives. (00:57:00)
Fort Apache (1948)
1 revealing mistake - chronological order
Directed by: John Ford
Starring: John Wayne, Henry Fonda, Ward Bond, Shirley Temple, George O'Brien, Pedro Armendáriz
Genres: Western
Continuity mistake: A group of new recruits is introduced to horseriding. One spindly volunteer gallops off first, but when we see him from behind he has been replaced by a stuntman of about twice his width. (00:44:10)
Captain Yorke: A charge! Mounted in fours.
RSM Michael O'Rourke: Why the madman.
Captain Yorke: And I'm to stay with the wagon train... and take O'Rourke with me.
RSM Michael O'Rourke: You'll find Lt. O'Rourke with his troop, sir. And thank you.
Trivia: Like in most western films made by John Ford, real Native Americans were used and were paid union scale.