- Cornel Wilde
- Peter Forrester
- Steve Cochran
- Marcel Brevoort
- Phyllis Thaxter
- Maria Corbet
- Karl Malden
- Maj. Latrec
- Paul Picerni
- Capt. Armand Dupree
- Lester Matthews
- Robbins
- Dan O'Herlihy
- Mike Duncan
- Jay Novello
- Herr Bauer
- Wilton Graff
- French Official
- Dan Riss
- German Sergeant
- Harlan Warde
- Maj. Dawson
- Kenneth Patterson
- General
- William F. Leicester
- Capt. Hughes
- Gayle Kellogg
- Corporal
- Harry Arnie
- Maquis
- Baynes Barron
- Henri
- Gregg Barton
- Sentry
- John Beattie
- Radio Operator
- Philip Carey
- Capt. Johnson / Radio Announcer (voice) (uncredited)
- James Carlisle
- Inquest Spectator
- Paul Cristo
- Judge
- Adrian Crossett
- Passenger
- George Dee
- Maquis
- Claude Dunkin
- Rene
- Anthony Eisley
- Maquis
- Joe Espitallier
- Maquis
- Franklyn Farnum
- Slide Projectionist
- Elizabeth Flournoy
- Woman Marine
- Charles Flynn
- German Civil Officer
- Eddie Foster
- Claude
- Don C. Harvey
- Nazi Guard
- Len Hendry
- Gestapo Officer
- Thomas Browne Henry
- Brother Francis - a Monk
- Frank Jaquet
- Bartender
- Roy Jenson
- Michel
- Gary Kettler
- German NCO
- Richard LaMarr
- Underground Member
- Ted Lawrence
- Didot
- John Logan
- German Soldier
- Jack Lomas
- Train Engineer
- Dayton Lummis
- French Radio Broadcaster
- George Magrill
- Train Brakeman
- John Marshall
- Driver
- Peter Michael
- Legionnaire
- Harold Miller
- Airplane Passenger
- Craig Moreland
- British Military Policeman
- George Nardelli
- Underground Member
- John Nelson
- Crewman
- Jimmy Noel
- Dining Hall Patron
- John Pickard
- Soldier
- Montgomery Pittman
- Maquis
- Joe Ploski
- Bar Patron
- Murray Pollack
- Dining Hall Patron
- Paul Power
- Inquest Spectator
- Rudy Rama
- Maquis
- Clark Ross
- Dining Hall Patron
- Henry Rowland
- Fritz - German Military Policeman
- John Roy
- Inquest Spectator
- Robert 'Buddy' Shaw
- (uncredited)
- Bill Slack
- Pvt. Korst
- Paula Sowl
- Hostess
- Paul Stathes
- Passenger
- Robert R. Stephenson
- Train Fireman
- Hal Taggart
- Officer at Meeting
- Wayne Taylor
- Etienne
- Carlo Tricoli
- Old Peasant
- Larry Winter
- Sentry
- Frances Zucco
- Elsa
