 |
Manuel Azaña as Himself (President of Spain) |
|
José Díaz as Himself (Parliamentarian) |
 |
Dolores Ibárruri as Herself |
|
Enrique Lister as Himself (Republican Army) |
|
Commander Martinez de Aragón as Himself (Republican Army) |
|
Gustav Regler as Himself (German writer) |
 |
Orson Welles as Narrator (voice) |
 |
Ernest Hemingway as Narrator (voice) |
 |
Jean Renoir as Narrator (voice) |
| Writing | Prudencio de Pereda | Writer |
| Writing | John Dos Passos | Writer |
| Writing | Archibald Macleish | Writer |
| Writing | Ernest Hemingway | Writer |
| Directing | Joris Ivens | Director |
| Writing | Joris Ivens | Writer |
| Writing | Lillian Hellman | Writer |
| Editing | Helen van Dongen | Editor |
| Sound | Virgil Thomson | Music |
| Sound | Marc Blitzstein | Music Arranger |
| Camera | John Fernhout | Director of Photography |
