When the South loses the war, Confederate veteran O'Meara goes West, joins the Sioux, takes a wife and refuses to be an American but he must choose a side when the Sioux go to war against the U.S. Army.

Rod Steiger
as Pvt. O'Meara

Sara Montiel
as Yellow Moccasin

Brian Keith
as Captain Clark

Ralph Meeker
as Lieutenant Driscoll

Jay C. Flippen
as Walking Coyote

Charles Bronson
as Blue Buffolo

Olive Carey
as Mrs O'Meara

H.M. Wynant
as Crazy Wolf

Neyle Morrow
as Lt. Stockwell

Frank De Kova
as Red Cloud (as Frank De Kova)