During filming for this Short, Moe was running late for his daughter's birthday, so he was rushed home in full costume, much to the surprise of his neighbors. He went through his daughter's entire birthday dressed like Hitler, stopping traffic and ending up with numerous calls to the police about it.
Four of the five "Axel" leaders pictured were official or semi-official Axis members in real life: Germany, Japan and Italy (all of whom had signed the Pact of Steel between 1936 and 1940) and the USSR (represented by the Russian-looking character, who at the time shared a non-aggression pact with Germany). Bay of Rum was supposed to be from Rumania (Rum-Rumania). Rumania was an Axis partner from 1940 - 1944.
The only Three Stooges sequel.