Pawnees Sioux over The Command?

The Pawnees don't get much respect in Cavalry & Indians movies, being depicted as enemies of the USA instead of valuable allies.

I just saw The Command (1954) about 10-13-2017. Company D of the Seventh (or Second) Cavalry is returning to fictional Fort Stark somewhere on the plains, and at the fictional town of Cashman's encounters infantry under Colonel Janeway, who orders them to accompany his soldiers and the civilian wagon train he is escorting through dangerous Indian lands to the fictional Paradise River, where the troops will join General Cook's (or Crook's or Hook's) command and the civilians will go on to their destination I guess.

Eventually a vast horde of hostiles follows The Command, launching attacks at will. The hostiles are greatly encouraged by news of the recent Battle of little Bighorn, putting The Command in July or August 1876, I guess, and it looks like the protagonists will reach Paradise instead of Paradise River.

The hostiles include Arapaho and Cheyenne, long time allies by 1876 and also allied to such often hostile tribes as the Sioux, the Comanche, Kiowa, and Kiowa-Apache. All these tribes were often hostile to the US. The hostiles also included Fox and Sac, two tribes that merged to form the Sac and Fox Nation long before 1876, and either the Omaha or the Otoe, I couldn't hear exactly. It doesn't make much sense for Fox, Sac, and Omaha or Otoe to go on the warpath in 1876, unless the Little Bighorn has convinced them the Sioux will win and drive Americans off the Plains.

And the 6th hostile group mentioned is the Pawnee. When Janeway hears that he says that Pawnees can't be that far west, not that Pawnees are valuable allies of the USA.

So The Command is another movie Pawnees would Sioux if they could.