Fort Defiance.

It's just after the Civil War and Ben Shelby arrives looking for Johnny Tallon whom he plans to kill. Shelby was the only survivor of a battle due to the cowardice of Tallon. Thinking Tallon dead, another man who lost a brother at the same battle arrives to kill Tallon's blind brother. Tallon arrives to find Shelby and his brother fleeing. Then they are attacked by Indians and Shelby and Tallon must now fight together postponing the inevitable showdown.