- Charlton Heston
- Lionel Evans
- Maximilian Schell
- General Schiller
- Kathryn Hays
- Annabelle Rice
- Leslie Nielsen
- Victor Rice
- Anton Diffring
- Colonel Arndt
- Linden Chiles
- Lieutenant Long
- Peter Masterson
- Sergeant Calloway
- Curt Lowens
- Captain Klingerman
- Neva Patterson
- Dorothy
- Cyril Delevanti
- Tartzoff
- Gregory Morton
- Jordon
- Parley Baer
- Alfred Hook
- Dan Frazer
- Chaminant
- Ed Peck
- Prescott
- Paul Birch
- General
- Jack Clinton
- Audience Member
- Robert Cole
- Soldier
- Stewart East
- Soldier
- Horst Ebersberg
- Lt. Heiser
- Bill Erwin
- Trumpet Player
- Barry Ford
- Fake US Military Policeman
- Kenneth Gibson
- Audience Member
- Mischa Hausserman
- (uncredited)
- Kenner G. Kemp
- Audience Member
- Alan Marston
- Audience Member
- Norbert Meisel
- (uncredited)
- Jim Michael
- Audience Member
- Ralph Nelson
- Belgian Officer
- Murray Pollack
- Audience Member
- Paul Power
- Audience Member
- Paul Ravel
- Audience Member
- Mark Russell
- Soldier
- Cosmo Sardo
- Audience Member
- Wilbur Schwandt
- Bass Player
- Bernard Sell
- Audience Member
- George Simmons
- Audience Member
- Tim Taylor
- Audience Member
- Otis Young
- USO Bus Driver
