George Peppard as Lt. Bruno Stachel

James Mason as General Count von Klugermann

Ursula Andress as Countess Kaeti von Klugermann

Jeremy Kemp as Willi von Klugermann

Karl Michael Vogler as Colonel Otto Heidemann

Anton Diffring as Holbach

Harry Townes as Kettering

Peter Woodthorpe as Rupp

Derek Newark as Ziegel

Derren Nesbitt as Fabian

Loni von Friedl as Elfi Heidemann

Friedrich von Ledebur as Feldmarschall von Lenndorf

Carl Schell as Manfred Von Richthofen

Roger Ostime as The Crown Prince

Hugo Schuster as Hans. Elderly Servant

Alex Scott as The Orator