- Stewart Granger
- Maj. Richard Mace
- Raf Vallone
- Roberto Rocca - Organizer
- Mickey Rooney
- Terence Scanlon - Demolition
- Edd Byrnes
- Simon Fell - Forger
- Henry Silva
- John Durrell - Assassin
- Spela Rozin
- Mila
- William Campbell
- Jean Saval
- Helmo Kindermann
- German Fortress Commandant
- Enzo Fiermonte
- Gen. Quadri
- Peter Coe
- Marko - Resistance Leader
- Nan Morris
- Stephana
- Helmuth Schneider
- German Patrol Boat Captain
- Giulio Marchetti
- Italian Officer
- Nicholas Rend
- Captain of Fishing Boat
- Craig March
- Petar Marasovic
- Todd Williams
- Partisan Leader
- Charles Brent
- Monk
- Richard Johns
- Wireless Operator
- Kurt Bricker
- German Naval Lieutenant
- Katrina Rozan
- Peasant Woman
- Fortunato Arena
- Sailor Firing Signal Rocket
- Mladen Cernjak
- Little Boy on the Market
