 | George Peppard als Lt. Bruno Stachel |
 | James Mason als General Count von Klugermann |
 | Ursula Andress als Countess Kaeti von Klugermann |
 | Jeremy Kemp als Willi von Klugermann |
 | Karl Michael Vogler als Colonel Otto Heidemann |
 | Anton Diffring als Holbach |
 | Harry Townes als Kettering |
 | Peter Woodthorpe als Rupp |
 | Derek Newark als Ziegel |
 | Derren Nesbitt als Fabian |
 | Loni von Friedl als Elfi Heidemann |
 | Friedrich von Ledebur als Feldmarschall von Lenndorf |
 | Carl Schell als Manfred Von Richthofen |
 | Roger Ostime als The Crown Prince |
| Hugo Schuster als Hans. Elderly Servant |
 | Alex Scott als The Orator |
| John Guillermin | Director |
| David Pursall | Writer |
| Jack Seddon | Writer |
| Gerald Hanley | Writer |
| Christian Ferry | Producer |
| Max Benedict | Editor |
| Stuart Lyons | Casting |
| Wilfred Shingleton | Production Design |
| Fred Carter | Art Direction |
| Elsa Fennell | Costume Supervisor |
| John O'Gorman | Makeup Artist |
| Tony Sforzini | Makeup Artist |
| Charles E. Parker | Makeup Department Head |
| René Dupont | Production Manager |
| Chris Greenham | Sound Editor |
| Darby Kennedy | Stunt Coordinator |
| Skeets Kelly | Camera Operator |
| Chic Waterson | Camera Operator |
| Douglas Slocombe | Director of Photography |
| Jerry Goldsmith | Original Music Composer |
| Mike Fox | Focus Puller |
| Pat McDermott | Hairdresser |
| Tony Curtis | Assistant Art Director |
| Skeets Kelly | Aerial Camera |
| Jack Causey | Assistant Director |
| Derek Cracknell | Assistant Director |
| Richard Best Jr. | Assistant Sound Editor |
| John Cox | Sound |
| Claude Hitchcock | Sound |
| Bob Jones | Sound |
| Elsa Fennell | Wardrobe Supervisor |
| Maurice Ayers | Special Effects |
| Ron Ballanger | Special Effects |
| Karl Baumgartner | Special Effects |
| Elizabeth Thoyts | Assistant Editor |
| Helen Whitson | Continuity |
