In the year 180 A.D. Germanic tribes are about to invade the Roman empire from the north. In the midst of this crisis ailing emperor Marcus Aurelius has to make a decission about his successor between his son Commodus, who is obsessed by power, and the loyal general Gaius Livius.
| Directing | Anthony Mann | Director |
| Writing | Edward Gibbon | Author |
| Production | Samuel Bronston | Producer |
| Writing | Philip Yordan | Screenplay |
| Writing | Ben Barzman | Screenplay |
| Writing | Basilio Franchina | Screenplay |
| Production | Jaime Prades | Associate Producer |
| Sound | Dimitri Tiomkin | Original Music Composer |
| Camera | Robert Krasker | Director of Photography |
| Editing | Robert Lawrence | Editor |
| Production | Maude Spector | Casting |
| Art | Veniero Colasanti | Production Design |
| Art | Veniero Colasanti | Set Decoration |
| Costume & Make-Up | Veniero Colasanti | Costume Design |
| Art | John Moore | Production Design |
| Art | John Moore | Set Decoration |
| Costume & Make-Up | John Moore | Costume Design |
| Directing | Yakima Canutt | Second Unit Director |
| Production | C.O. Erickson | Production Manager |
| Directing | José López Rodero | Assistant Director |
| Directing | José María Ochoa | Assistant Director |
| Camera | John Harris | Camera Operator |
| Crew | Cecilio Paniagua | Second Unit Cinematographer |
| Art | Maciek Piotrowski | Title Illustration |
| Sound | David Hildyard | Sound Mixer |
| Sound | Gordon K. McCallum | Sound Re-Recording Mixer |
| Sound | Milton C. Burrow | Sound Effects Editor |
| Sound | George Korngold | Music Editor |
| Editing | Magdalena Paradell | Assistant Editor |
| Crew | Alex Weldon | Special Effects |
| Art | Stanley Detlie | Property Master |
| Crew | Carl Gibson | Technical Supervisor |
| Lighting | Bruno Pasqualini | Electrician |
| Costume & Make-Up | Gloria Mussetta | Wardrobe Master |
| Costume & Make-Up | Mario Van Riel | Makeup Artist |
| Costume & Make-Up | Grazia De Rossi | Hairdresser |
| Directing | Elaine Schreyeck | Continuity |
| Crew | George Tyne | Dialogue Coach |
| Crew | Will Durant | Technical Advisor |
| Production | Michał Waszyński | Associate Producer |
| Crew | Yakima Canutt | Stunt Coordinator |
| Crew | Samuel Bronston | Presenter |
| Directing | Andrew Marton | Second Unit Director |
| Directing | Mauro Sacripanti | Second Assistant Director |
| Directing | Julio Sempere | Second Second Assistant Director |
| Sound | Dimitri Tiomkin | Conductor |
| Sound | Cecil Bolton | Orchestrator |
| Sound | Frank Comstock | Orchestrator |
| Sound | Robert Docker | Orchestrator |
| Sound | George Parrish | Orchestrator |
| Sound | David Tamkin | Orchestrator |
| Sound | Herbert Taylor | Orchestrator |
