Directed by Harold Daniels
This John Nesbitt's Passing Parade short looks at how a few specific inventions made a major contribution to the U.S. war effort.
John Nesbitt
Narrator (voice)
Ernie Alexander
Billiard Ball Tester (uncredited)
Margaret Bert
Arachnophobic Woman (uncredited)
Edward McWade
Roger Moore
Doctor (uncredited)
U-571
Tom Quinn
Laboratory Man (uncredited)
Bert Stevens
Operation Pacific
Wolf Hound
The Secret of Santa Vittoria
Pressure
Beneath Hill 60
Enigma
Against the Sun