Continuity mistake: Jake and his prisoner arrive at the ranch where they find some dead killed by Indians. As they finish burying the people Jake's prisoner hits him with a shovel and then tosses it handle closes to him. When Jake wakes up the shovel is lying on the ground with the handle farthest away from him. (00:19:50)
Factual error: The movie is set in 1843-44, when the rest of the world is still using cap and ball weapons, yet Ranger captain Jake Cutter is wielding a gunbelt with filled cartridge loops and a colt six-gun.