Rent Rio Lobo (1970)

A classic action-filled John Wayne western is set into motion with a spectacular robbery of a Union pay train by Confederate guerrillas. The train's colonel (John Wayne) jails the enemy leaders (Jorge Rivero, Chris Mitchum) but the three men later become friends when the war ends. Together they seek the Union traitors responsible for a string of Confederate train robberies, a mission that culminates in a rousing shoot-'em-up finale.