Cast (in credits order)
| Walter Matthau | ... | Self | |
| Walter Cronkite | ... | Narrator (voice) | |
| Douglas MacArthur | ... | Self (archive footage) | |
| Harry S. Truman | ... | Self - U.S. President (archive footage) | |
 |
Jean MacArthur | ... | Self (archive footage) |
| Rest of cast listed alphabetically: | |||
|
|
Ernest W. Marland | ... | Self - Senate Majority Leader (archive footage) (uncredited) |
|
|
Sam Rayburn | ... | Self - Speaker of the House (archive footage) (uncredited) |
