During the Napoleonic Wars, when the French have occupied Spain, some Spanish guerrilla soldiers are going to move a big cannon across Spain in order to help the British defeat the French. A British officer is there to accompany the Spanish and along the way, he falls in love with the leader's girl.
| Directing | Stanley Kramer | Director |
| Writing | Edna Anhalt | Screenplay |
| Production | Stanley Kramer | Producer |
| Editing | Ellsworth Hoagland | Editor |
| Editing | Frederic Knudtson | Editor |
| Art | Rudolph Sternad | Production Design |
| Costume & Make-Up | Joe King | Costume Design |
| Art | Fernando Carrere | Art Direction |
| Camera | Franz Planer | Director of Photography |
| Sound | George Antheil | Original Music Composer |
| Writing | Edward Anhalt | Screenplay |
| Writing | C. S. Forester | Novel |
| Costume & Make-Up | Grazia De Rossi | Hairdresser |
| Costume & Make-Up | John O'Gorman | Makeup Artist |
| Costume & Make-Up | Bernard Ponedel | Makeup Artist |
| Costume & Make-Up | José María Sánchez | Makeup Artist |
| Production | Stanley Goldsmith | Production Manager |
| Production | Ivan Volkman | Production Supervisor |
| Directing | Alfonso Acebal | Assistant Director |
| Directing | Isidoro M. Ferry | Assistant Director |
| Directing | José María Ochoa | Assistant Director |
| Art | Art Cole | Property Master |
| Camera | Fred Mandl | Camera Operator |
| Lighting | Don Stott | Gaffer |
| Directing | John Franco | Script Supervisor |
| Crew | Paco Reyes | Choreographer |
