The Devil's Trail (1942)

Its pre-civil war days and Bull McQuade is trying to keep Kansas from becomming a free state. He controls the town of Tiburon, a haven for wanted outlaws. One of the wanted men is Bill Hickok and Marshal Tex Martin comes to get him. Later when Hickok saves Tex's life, the two join up and return to Tiburon to try and bring in McQuade and his gang.