One of a number of interesting psychological westerns from the fifties though this isn't in the same class as the later Budd Boetticher/Randolph Scott westerns, (it's let down by a poor script and poor acting). Robert Ryan and Rock Hudson play brothers returning from the Civil War to the vanquished Confederate side. Ryan goes to the bad while the mealy-mouthed Hudson stays on the side of law and order and that's basically it. But Boetticher sets up a number of interesting scenarios that make the Ryan character far from a cut-and-dried villain, (late in the film there is even a little speech as to what turned him the way he is), and the familial relationships are nicely drawn.
Review of Horizons West
