Re: OOC Thread: The Stormclouds Gather
1940 or earlier would bring the German American Bund into the story, a handy source of local villains :) (they were American supporters of Hitler's Germany). By 1941, and certainly after Pearl Harbor, they were a spent force.
Films like 'The Rocketeer' and 'Raiders of the Lost Ark' were set in the run-up to war, 1936-1938.