- Charlton Heston
- Captain Paul MacDougall / Benny the Snatch / Narrator
- Elsa Martinelli
- Antonella Massimo
- Harry Guardino
- Sgt. Joseph Angelico
- Salvatore Baccaloni
- Ciccio Massimo
- Gabriella Pallotta
- Rosalba Massimo
- Brian Donlevy
- Col. Sherman Harrington
- Marietto
- Livio Massimo
- Rudolph Anders
- Oberst Krafft
- Arthur Shields
- Monsignor O'Toole
- Debbie Price
- Luigina Massimo
- Vadim Wolkonsky
- Conte Danesi
- Lars Bloch
- US Soldier
- Nick Borgani
- Relative
- Argentina Brunetti
- Relative
- Gary Collins
- Maj. Wolff
- James Farley
- Col. Harrington's Aide
- Bob Gandett
- The General
- James Garde
- Messenger
- Taldo Kenyon
- Luchino
- Ted Knight
- Steve
- David Macklin
- Favio
- Frank Nechero
- Husband
- Otto Reichow
- German Major
- Werner Reichow
- German Soldier
- Stephen Soldi
- Relative
- Carlo Tricoli
- Uncle
- Victoria Vetri
- Undetermined Role
- Forrest Wood
- Lt. Browning
- Fred Zendar
- Sailor
