Gary Cooper as Benjamin Trane

Burt Lancaster as Joe Erin

Denise Darcel as Countess Marie Duvarre

Cesar Romero as Marquis Henri de Labordere

Sara Montiel as Nina

Ernest Borgnine as Donnegan

Charles Bronson as Pittsburgh

George Macready as Emperor Maximilian

Jack Elam as Tex

James McCallion as Little-Bit

Morris Ankrum as Gen. Ramírez

James Seay as Abilene

Henry Brandon as Capt. Danette

Archie Savage as Ballard

Charles Horvath as Reno

Jack Lambert as Charlie

Juan García as Pedro

Ketty Clavijo as Night Club Dancer (uncredited)

Pepita Funez as Flamenco Dancer (uncredited)

Fernando Wagner as Imperial Officer (uncredited)