| Dan O'Herlihy | Brig. Gen. Warren A. Black |
| Walter Matthau | Prof. Groeteschele |
| Frank Overton | Gen. Bogan |
| Ed Binns | Col. Jack Grady |
| Fritz Weaver | Col. Cascio |
| Henry Fonda | The President |
| Larry Hagman | Buck |
| William Hansen | Defense Secretary Swenson |
| Russell Hardie | Gen. Stark |
| Russell Collins | Gordon Knapp |
| Edward Burns |
| Director | Sidney Lumet |
| Producer | Sidney Lumet; Max E. Youngstein |
| Writer | Walter Bernstein; Eugene Burdick |
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