Factual error: After the first encounter with the Apaches, the covered wagon is headed to the Fort at full speed. The camera pans to the Apaches on the ridge and you can see a truck driving at the bottom right corner. (00:32:00)
Factual error: When York is explaining to Thursday about Cochise and the Indian agent's calumny, he states that Cochise left and, "took most of his people and crossed the Rio Bravo into Mexico." The reservation in question would have been in the Arizona Territory, and the Rio Bravo and Rio Grande ceases to be the international border at El Paso, Texas. Cochise may have gone into Mexico, but he didn't cross the Rio Bravo to get there. (01:06:40)
Factual error: In the final charge in column of fours, the US flag has 48 stars. Far too many for the period.
