Rio Grande (1950)

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 .

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)

Nightshade

Other mistake: In the scene after the children are taken and Col. York and the cavalry ride off to rescue them, Mrs. York is standing holding Sandy's (who remains behind) arm watching them ride away. When they get to the village and Tyree, young York and Sandy leave to scout the village.

Mrs. Kathleen York: Aren't you gonna kiss me goodbye?
Lt. Col. Kirby York: I never want to kiss you goodbye, Kathleen.

Trooper Travis Tyree: Hey, Mister... what time do they blow the horn around here for people t' eat?

Lt. Col. Kirby York: You said it, soldier, that's enough for me.
Mrs. Kathleen York: Ramrod, wreckage and ruin, still the same Kirby York.
Lt. Col. Kirby York: Special privileges to special born, still the same Kathleen.