I've just found an interesting WWII movie that is set during the Battle of the Bulge. It is called "Silent Night" and stars Linda Hamilton. In a nutshell, the movie is about three American and three German soldiers that find their way to a lady's cabin, and despite their differences, spend Christmas eve in the cabin and celebrate Christmas. If I am not mistaken, Hallmark produced the movie, and it is a very good movie.
Thanks for the info. I will look for it. I will add it to my Netflix list. 
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company
Maj Todd O. USMC, Retired
Grandson of LTC John O'Brien
Lee and I have watched several Hallmark Channel movies lately and all were very well done. I am sure this won't be an exception to that rule.
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company
Speaking of Christmas movies...
This was also listed on that site; Joyeux Noel. It's not a WWI movie, but a WWII film, but thought it appropriate to mention it here.
Mind you, I haven't seen it yet myself, but it got some good reviews, so while we are on the subject of war movies with Christmas content...
Marion J Chard
Proud Daughter of Walter 'Monday' Poniedzialek
540th Combat Engineer - H&S Company