Watch A Bullet for the General
In this action western, bandits under the command of El Chuncho manage to steal a cache of arms from a train so that they can profit by selling the stolen weapons to a band of revolutionaries. When one of the passengers named Bill Tate assists them during the robbery, he is allowed to join their gang. But El Chuncho and his men are unaware that Tate has a secret identity. He is actually a hired assassin working for the government of Mexico.