Richard Burton (Major Jonathan Smith), Clint Eastwood (Lieutenant Morris Schaffer), Mary Ure (Mary Ellison), Patrick Wymark (Colonel Wyatt Turner), Michael Hordern (Admiral Rolland), Ferdy Mayne (General Rosemeyer), Robert Beatty (General George Carnaby), Anton Diffring (SS-Standartenführer Kramer), Derren Nesbitt (SS-Sturmbannführer von Hapen), Ingrid Pitt (Agentin Heidi), Donald Houston (Christiansen), William Squire (Thomas), Brook Williams (Sergeant Harrod), Peter Barkworth (Berkeley), Neil McCarthy (Sergeant Jock MacPherson), Vincent Ball (Tischler)