http://youtu.be/IbIaI15Mio4?t=31m49s
Video: 'WW2: The Battle of the Bulge' (Dec. 25, 1944, at 31:49)
(Monday, December 25, 1944, Christmas Day, noon local time; during the Battle of the Bulge on the Western Front of World War II) — American soldiers, preparing their Christmas dinners, including heat up C-Rations (tin cans filled with a variety of meats and vegetables), were still pinned down one last full day in Bastogne.
http://youtu.be/n7Qcf7h1FCg?t=41m02s
Video: 'American Experience - Battle of the Bulge (PBS Documentary)' (Dec. 25, 1944, at 41:02)