When Massai first appears on screen he alternately holds his rifle with one hand or both hands.
The reporter on the train puts a handkerchief in Geronimo's lap to hide his handcuffs, then steps away. In the next shot a handkerchief has suddenly appeared in Massai's lap as well.
When Masai is hiding in a barn a Cherokee comes in wearing a coat with it's collar turned up. When they're together with the camera looking at Cherokee the collar is down but when the camera is looking at Masai the collar is up. Note the bottom of the screen as he walks down the barn and a mattress flops into view.
In a long fixed shot when Sieber enters a cave there is a noticeable jump in the background after he enters and can't be seen anymore.
Lancaster, the blue-eyed Massai.
Jean Peters - the blue-eyed Apache woman.
The corn wasn't corn at all but rush, an aquatic plant. You can see the difference between them. The plants have no cob.
Shortly after scattering a handful of soldiers tracking them, Massai and Nalinle are shown at a cooking fire and Nalinle complains that the rabbit Massai shot was a small one. However in the scene immediately before, Massai had returned from hunting with a deer slung across his horse.
When Massai exits Santos' wickiup, his shadow is visible on the blue backdrop simulating the sky.
About 16 minutes into the movie as Massai (Burt Lancaster) is fleeing from the white mob through a hotel corridor you can see an unlit electric 'EXIT' sign visible in the hallway at the top of the shot.
Early in the film Massai is seen running through the dirt streets of St. Louis on wooden sidewalks, with wooden buildings of one or two stories. In the 1880's, St. Louis had tall buildings and paved streets, not wooden buildings and dirt streets.
The tire tracks on the mud when Massai came back to the girl.
The story begins in March, 1886. Weeks (or at most, a few months) later, Clagg tells Massai he is in the Oklahoma Territory. This name did not become official until May, 1890.
In an overhead shot of the train as it pulls in to pick up the Indians, it can be seen that the locomotive has a dynamo for generating electricity for the headlight. An 1880s locomotive would have a kerosene headlight.
When Massai is moving through Clagg's barn, a mattress is seen being flopped into position on the bottom left of the screen, to be used for Clagg to land on after being hit by Massai.