Woody Guthrie, of course, made several contributions to WWII songs, although they weren't as popular as many of the ones mentioned above.

His main contribution, of course, was his answer to Irving Berlin's "God Bless America" -- This Land Is Your Land. He also had a song about Fascists not being welcome. Something like, "We Don't Need No Fascists." (That's not it, but it's something like that.) "The Sinking Of the Reuben James," and "Round and Round Hitler's Grave" have already been mentioned.

But he, apparently, added WWII related verses to some of his existing songs while Hitler was in power. For instance, in the song, "The Biggest Thing That Man Has Ever Done (The Great Historical Bum)," he sang this verse:

"There's a man across the ocean, I think ya know him well, His name is Adolf Hitler, we'll blow his soul to Hell, We'll kick him in the panzers and put him on the run, And that'll be the biggest thing that man has ever done."

He also wrote a song called "Miss Pavilchenko," about a Russian spy in WWII.