I Killed Geronimo (1950)

"DREADED INDIAN WARRIOR'S LAST DESPERATE STAND!"

Going undercover as the notorious "Waco Kid," U.S. Army Captain Jeff Packard manages to infiltrate a gang of gold-shipment thieves lead by nasty Walt Anderson. But Anderson and his gang are not the only troublemakers around: Packard must also contend with Geronimo and his Apache warriors, who are demanding guns in exchange for peace.