Thanks Joe and Walrus:
The story takes place on Christmas Day 1914. The two sides German and Allied get together and bond over the evening. They sing a little, play a little, talk a little and then they go back to war the next day. Anyways, trying to find the songs they would have loved, sung and listened too during that time period.
Thanks for the info on Belleau Wood Joe. I have truly enjoyed that song since I heard it. But until now did not know the correct title.