Someone at Warner Bros. discovered a rule that any film done by the army could be shown to the general public if the soundtrack was replaced by a new one. So the original narration was removed and replaced by a new one; contrary to popular belief, it was the short that won the Oscar, not Dr. Seuss (real name Theodore Geisel), who had written the script for the original short.
This film represents one of a small handful of American films which featured the word Hitler or Hitler's, and both referencing Adolf Hitler, in their titles and were ones made around the time of the Second World War. These World War II movies include Hitler's Children (1943); Hitler's Madman (1943) aka Hitler's Hangman; Hitler--Dead or Alive (1942); The Hitler Gang (1944) aka Hitler & co.; the documentary short, Hitler Lives (1945); The Strange Death of Adolf Hitler (1943); Hitler's Women aka Women in Bondage (1943); the comic short, The Devil with Hitler (1942) and Hitler: Beast of Berlin (1939).