There is an interesting article in Der Spiegel about American propaganda films during World War 2, specifically Donald Duck. I knew I'd seen The Fuehrer's Face before, although I have no clue where. It is, of course, out on the Internet happily ignoring some of the stupider aspects of American copyright laws. Both are about 8 min.
The other film the article mentions, Donald Gets Drafted, is at:
2018 CVE List
14 hours ago