I Killed Geronimo (1950)

DREADED INDIAN WARRIOR'S LAST DESPERATE STAND!

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