This John Nesbitt's Passing Parade short looks at how a few specific inventions made a major contribution to the U.S. war effort.
| Actor | Role |
|---|---|
| JJohn NesbittNarrator (voice) | Narrator (voice) |
| EErnie AlexanderBilliard Ball Tester (uncredited) | Billiard Ball Tester (uncredited) |
| MMargaret BertArachnophobic Woman (uncredited) | Arachnophobic Woman (uncredited) |
 Edward McWadeBilliard Ball Tester (uncredited) | Billiard Ball Tester (uncredited) |
 Roger MooreDoctor (uncredited) | Doctor (uncredited) |
| TTom QuinnLaboratory Man (uncredited) | Laboratory Man (uncredited) |
| BBert StevensLaboratory Man (uncredited) | Laboratory Man (uncredited) |