The 1st Brigade Combat Team, 10th Mountain Division is a mountain warfare infantry brigade combat team of the United States Army based at Fort Drum, New York. It is a subordinate unit of the 10th Mountain Division. Formed as the 10th Mountain Division's original headquarters company, the brigade traces its lineage through the division's fight through Italy in World War II and afterwards, as it commanded a training division and then an infantry division which briefly deployed to Europe.