| Gary Cooper | Col. Billy Mitchell |
| Charles Bickford | Gen. Jimmy Guthrie |
| Ralph Bellamy | Congressman Frank R. Reid |
| Rod Steiger | Maj. Allan Guillion |
| Elizabeth Montgomery | Margaret Lansdowne |
| Fred Clark | Col. Moreland |
| James Daly | Lt. Col. Herbert White |
| Jack Lord | Lt. Cmdr. Zachary ''Zack'' Lansdowne |
| Peter Graves | Capt. Bob Elliott |
| Darren McGavin | Capt. Russ Peters |
| Robert Simon | Adm. Gage |
| Charles Dingle | Sen. Fullerton |
| Dayton Lummis | General Douglas MacArthur |
| Tom McKee | Capt. Eddie Rickenbacker |
| Steve Roberts | Major Carl Spaatz |
| Herbert Hayes | General John J. Pershing |
| Robert Brubaker | Major H.H. Arnold |
| Ian Wolfe | President Calvin Coolidge |
| Phil Arnold | Fiorello La Guardia |
| Will Wright | Admiral William S. Sims |
| Steve Holland | Mrs. Sturges |
U.S. Col. Billy Mitchell is a decorated World War I veteran airman frustrated by the military's mistreatment of the flying program. With military brass and many in the government still favoring battleships, Mitchell sees funding cut to aviation, resulting in the unnecessary deaths of pilots. When Mitchell publicly accuses his superiors of ineptitude, he is court-martialed. At the trial, Congressman Frank Reid advises Mitchell, who faces Maj. Guillion .
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