I WOULD like to comment on both of these, except that I've never seen either of them.
The First Cartoon shows that Warner Bros. had actually Ripped off Mickey and Minnie Mouse, which I can't blame them for making cartoons to find a new mascot much later.... Otherwise it's standard Merrie Melody Fare, Have a song and have everyone sing it.
The Second insults the Germans by making their generals beat on the Soldier throughout the Cartoon. I do like how they had Hitler look in the cartoon, one of my favorites is the one where he goes "HAI HITLER" and a skunk passes by, then he actually wondered why he did that.

Classic.