It was Chief Joseph of the Nez Perce who said, "I will fight no more, forever," not Quannah Parker.
Boyd Stockman an uncredited stunt man was shoot in the shoulder with an arrow by one of the Indians.
When the Comanches ride down the main street of the Mexican village, a crewmember wearing a white shirt, dark pants, and a hat can be seen at the lower-right-hand side of the screen turning around and walking off to screen right.
Since the Comanches in this movie were found almost only in Texas and Oklahoma little of the scenery used reflects those states geography.