| Cast list |
| John Nesbitt | as | Narrator (voice) |
| Raymond Gram Swing | as | Himself (voice) (archive sound) |
| Neville Chamberlain | as | Himself (voice) (archive sound) |
| H.V. Kaltenborn | as | Himself (voice) (archive sound) |
| Franklin Delano Roosevelt | as | Himself (archive footage) |
| Winston Churchill | as | Himself (voice) (archive footage) |
| George C. Marshall | as | Himself (archive footage) |
| William S. Knudsen | as | Himself (archive footage) |
| Admiral Harold R. Stark | as | Himself (archive footage) |
