Well, not quite. But he was HEAVILY involved in WWII propaganda. And he wrote a documentary on a War Department film about the planned invasion of Japan if the Japanese hadn't surrendered. The film, called Design for Death, won the academy award for best documentary. http://en.wikipedia.org/wiki/Design_for_Death And his political cartoons about World War II have some very familiar images in them: By demiurgex at 2010-02-25 By demiurgex at 2010-02-25 By demiurgex at 2010-02-25 Interesting to note they started considerably before the US involvement in WWII, in specific a full 11 months before Pearl Harbor.
I'd kick Hitler in the nuts, I'd kick the japs right in their butts. The Italians I'd leave alone Because their heads are full of bone. I'll beat the Axis Sam I Am Me, FDR, and Uncle Sam!
Oh, meant to include the link to the WWII political cartoon archive: http://orpheus.ucsd.edu/speccoll/dspolitic/