Continuity mistake: In the scene towards the end of the film, when three troopers creep into the church, Margaret Mary hits Sandy over the head. When Margaret Mary starts to speak, a ribbon around her neck curiously unravels itself and disappears behind her back .
Rio Grande (1950)
1 continuity mistake - chronological order
Directed by: John Ford
Starring: John Wayne, Ben Johnson, Maureen O'Hara, Claude Jarman Jr.
Factual error: The cavalry sing Low Bridge (or Fifteen Years On The Erie Canal) as they trek across Texas in 1879. This was written by Thomas S. Allen in 1905 during the time the Erie canal was switched from mule power to engine power. (00:49:00)
Trooper Travis Tyree: Hey, Mister... what time do they blow the horn around here for people t' eat?