- Doug McClure
- Major Harry Cook
- Rene Auberjonois
- Halden Brevik / Olav Volda
- Richard Basehart
- Schiller
- Max Baer Jr.
- Tanker
- Chuck Connors
- Colonel Morgan Crawford
- Don Knight
- Focus Flaherty
- Greg Mullavey
- Sparrow
- Paul Koslo
- Davies
- Barry Brown
- Donnelly
- Tom Skerritt
- Orville Fitzgerald
- Charles Aidman
- Opening Narration
- Genadii Biegouloff
- Bridski
- Karl Bruck
- Chef
- Bob Harks
- Mourner
- Peter Hellman
- Konrad
- Steve Ismay
- German Soldier
- Norbert Meisel
- (uncredited)
- Rolf Niehus
- Helmut Weber
- Karl Swenson
- Gunter
