Actor Stuart Randall, playing Standing Bear, had all his lines re-dubbed with another actor's voice after filming was completed. Apparently the producers finally realized that most Canadian Indians do not, like Randall, have a distinct Texas accent.
When Cameron Mitchell's character is killed by 'Duncan Comes Running, The arrow hits him in a khaki webbing strap around his chest that wasn't present in any of the previous shots, nor in the last shot of the character.
Stuart Randall originally had a small role in "Pony Soldier", but due to Richard Boone bring hospitalized for three weeks with a severe bout of pneumonia, he was given the larger role of Standing Bear.
The last shot of the film of Mounties on their horses was taken at the Coronation of Queen Elizabeth the Second in 1952, the year the film was released. They are riding past the statue of Queen Victoria which is directly in front of Buckingham Palace.