I watched A Midnight Clear, which I liked, but it merged in my head with Joyeux NoŽl. Are these the same movie? I'm having trouble remembering what things came from which movie. I'm interested in Tigerland. I'm going to look for that.
I'm going a little off here.. but A Very Long Engagement a french love story staring Audrey Tautou has some really great WWI visuals.