FORT DRUM The 10th Mountain Division headquarters will close out operations in eastern Afghanistan as it deploys there this winter.
The deployment was announced Tuesday evening by the Department of Defense.
According to the departments announcement, the headquarters unit will send about 630 personnel for the mission.
According to a division spokesman, the headquarters will become the commanding unit for Regional Command East, replacing the headquarters of the 101st Airborne Division in the role. The unit is expected to be in the region for about a year, until the Dec. 31, 2014, American deadline for withdrawing military forces from the country.
According to the International Security Assistance Force website, the command region covers multiple provinces over approximately 46,000 square miles, about the size of Virginia, and shares a portion of the border with Pakistan.
The divisions 1st and 2nd Brigade Combat Teams are in the process of returning from the region, with several from the unit already home. The 10th Combat Aviation Brigade and the divisions 4th Brigade Combat Team, based at Fort Polk, La., also are in the region.
The divisions 3rd Brigade Combat Team also started a deployment Monday to multiple areas in the eastern part of the country.
The looming deployment has been discussed for months by several people in the divisions leadership, including Fort Drum and division commander Maj. Gen. Stephen J. Townsend.
The headquarters was one of six units announced for the deployment. Also announced were elements of the 4th Infantry Brigade Combat Team, 4th Infantry Division, Fort Carson, Colo., the 2nd Infantry Brigade Combat Team, 101st Airborne Division, Fort Campbell, Ky., the 3rd Armored Brigade Combat Team, 1st Armored Division, Fort Bliss, Texas, the 159th Combat Aviation Brigade, 101st Airborne Division and the XVIII Airborne Corps Headquarters, Fort Bragg, N.C.