When the Modocs kill General Canby the Army fires a three-inch rifled field piece at the Modocs' position, but the shell never lands or explodes.
President Grant is shown wearing his Army uniform in the White House. This is inaccurate as General Grant resigned his commission in 1869.
During the battle at the Stronghold, General Gilliam orders the bugler to play "Retreat," but the call that is played is "Recall."
Toby Riddle did not die at the peace talk ambush. He was praised for saving Alfred Meachum from being scalped. She even received a military pension of $25/month until her death in 1920 for her bravery that day.
The last submitted error, which is not posted yet, should be corrected from General Canby to General Gilliam.
This movie was based on the 1869 Modoc Indian uprising in northern California, yet they show 44-40 lever action Winchester rifles, which were not introduced until 1873.
When the woman on the stagecoach is shot by a Modoc arrow, if you look closely you can see the filament wire used to guide the prop arrow to its target.
This movie is obviously filmed in Arizona and not the Klamath area of southern Oregon.
When a group of Modocs are tracked to Willow Creek, there is a meeting in a cabin where the civilian scout meets up with the US Army Captain. They forget to lock the door and the Modocs walk right in.
When Captain Jack meets with the peace commission and is asked by Johnny MacKay what it would take to make peace, he responds "all of the Lost River to the Klamath. River".