<human>:  When did the 15th Tank Battalion fight in the Battle of the Bulge?
<bot>: The Battle of the Bulge lasted from December 16, 1944 to January 28, 1945. It was the largest battle in Europe during World War II. It took place in the Ardennes region of Belgium and Luxembourg, and involved about three million men, making it the largest battle in the history of the world.