The 1st Brigade Combat Team, 10th Mountain Division is an active Infantry Brigade Combat Team of the United States Army based at Fort Drum in New York. The brigade headquarters carries the lineage of the 10th Mountain Division's original headquarters company, and served as such in World War II, and in peacetime at Fort Riley, Fort Benning, and West Germany in the 1940s and 1950s.
The brigade was activated in April 1986, at Fort Drum, New York, when the 10th Mountain Division was reactivated as one of the Army's new Light Infantry Divisions. 1st Brigade and its subordinates saw numerous deployments to contingencies around the world in the 1990s. With the Global War on Terrorism the brigade has seen multiple deployments to Afghanistan to support Operation Enduring Freedom and to Iraq to support Operation Iraqi Freedom.
The brigade currently consists of seven subordinate battalions. The core of the brigade's combat power are its three infantry battalions: 2nd B