John McCutcheon's "Christmas in the Trenches" - tells the story of the Christmas Truce of 1914, when peace spontaneously broke out between front line British and German troops in France.
I just recorded a version with my duo Folk in A - that'd be me singing and playing the fretless Tobias Classic. I think it came out sounding pretty good. It's a wonderful story, and a really good, and underplayed, Christmas song.
You can stream it, or download it for free. Go to
http://wizard.folkina.com/ , click on the "Music" tab, and listen to or download "Christmas in the Trenches" there.