During World War II, convicts are recruited by the Allies for an extremely hazardous mission.
| Actor | Role |
|---|---|
 Stewart GrangerMaj. Richard Mace | Maj. Richard Mace |
 Raf ValloneRoberto Rocca | Roberto Rocca |
 Mickey RooneyTerence Scanlon | Terence Scanlon |
 Edd ByrnesSimon Fell | Simon Fell |
 Henry SilvaJohn Durrell | John Durrell |
 William CampbellJean Saval | Jean Saval |
 Peter CoeMarko | Marko |
 Špela RozinMila | Mila |
| HHelmo KindermannGerman Fortress Commandant | German Fortress Commandant |
 Enzo FiermonteGen. Quadri | Gen. Quadri |
| NNan MorrisStephana | Stephana |
 Helmuth SchneiderGerman Patrol Boat Captain | German Patrol Boat Captain |
 Giulio MarchettiItalian Officer | Italian Officer |
| NNicholas RendCaptain of Fishing Boat | Captain of Fishing Boat |
| CCharles BrentMonk | Monk |