The War Wagon

The story of a man who was shot, robbed and imprisoned who returns to steal a large gold shipment from the man who wronged him. The gold is transported in an armored stage coach, the War Wagon.
An ex-con seeks revenge on the man who put him in prison by planning a robbery of the latter's stagecoach, which is transporting gold. He enlists the help of a partner, who could be working for his nemesis.