One of my faves, too. I’m trying to remember which came first – the song or Schultz’s depiction of Snoopy as a WWI fighter pilot. For some reason, I think the song came first. The lyrics reflect the Christmas Day cessation of hostilities – like soccer games – that took place during the war. Perhaps Schultz liked the song too!

Ah, looked it up on Wikipedia. The song was written and recorded before Schultz started depicting Snoopy as a WWI fighter pilot, but wasn’t released until a year after Schultz started depicting Snoopy as a fighter pilot. Initially, no one would release the novelty song.