| Credited cast: |
 | Budd Knapp | - | Narrator (voice) |
| Rest of cast listed alphabetically: |
 | Lord Athlone | - | Himself (archive footage) |
 | Lord Beaverbrook | - | Himself (archive footage) |
 | John Buchan | - | Himself (archive footage) (as Lord Tweedsmuir) |
 | Tim Buck | - | Himself (archive footage) |
 | Neville Chamberlain | - | Himself (archive footage) |
 | Winston Churchill | - | Himself (archive footage) |
 | George Drew | - | Himself (archive footage) |
 | Maurice Duplessis | - | Himself (archive footage) |
 | Hermann Göring | - | Himself (archive footage) |
 | Mitchell Hepburn | - | Himself (archive footage) |
 | Adolf Hitler | - | Himself (archive footage) |
 | Camillien Houde | - | Himself (archive footage) |
 | C.D. Howe | - | Himself (archive footage) (as Clarence Decatur Howe) |
 | King George VI | - | Himself (archive footage) |