Continuity mistake: When Albert Johnson jumps into the top of a tree, he first throws his backpack off the hill but leaves his rifle. After he gets to the base of the tree both his backpack and rifle are there.
Continuity mistake: When Carl Weathers gets killed, he is on the ground with his left arm lying across his forehead. The camera cuts away to Lee Marvin who walks back from the edge of the cliff to Weathers, and in the next view of Weathers, Weathers' other arm - his right - is now across his forehead.
Continuity mistake: As the posse is attacking Johnson's cabin, one man runs up and kicks down the door. Johnson shoots him, then the door swings back and closes on its hinges again.
Suggested correction: The door does not get kicked off its hinges. It swings open.