Special Troops Battalion , 2nd Brigade Combat Team , 10th Mountain Division ( United States ) The 2nd Brigade Combat Team , 10th Mountain Division Special Troops Battalion is a special troops battalion of the United States Army headquartered at Fort Drum , New York . It is the organization for the command elements of the 2nd Brigade Combat Team , 10th Mountain Division . The battalion contains the division ' s senior command structure , including its Headquarters and Headquarters Company , as well as communication and support elements . Organization . The 2nd Brigade Combat Team ' s Special Troops Battalion traces its lineage to the 2nd Brigade when it was originally activated in 1985 . Though the battalion was not activated until 2005 , its lineage goes back to 1985 . The 2nd Brigade Combat Team , 10th Mountain Division Special Troops Battalion is subordinate to the 2nd Brigade Combat Team , 10th Mountain Division , and is a permanent formation of the brigade , as the 2nd Brigade Combat Team ' s command elements are all contained in the STB . The battalion consists of four companies ; the brigade ' s Headquarters and Headquarters Company , as well as A Company , a Combat Engineer company , B Company , a Military Intelligence company , C Company , a Signal company , and a generic Military Police platoon . These companies provide services for the other battalions of the 2nd Brigade Combat Team . As such , all of the formations are mountain warfare qualified . History . Following the 11 September 2001 attacks , elements of the division , including its special troops battalion and the 1 - 87th Infantry deployed to Afghanistan in support of Operation Enduring Freedom in late 2001 . These forces remained in the country until mid - 2002 , fighting to secure remote areas of the country and participating in prominent operations such as Operation Anaconda , the Fall of Mazar - i - Sharif , and the Battle of Qala - i - Jangi . The division also participated in fighting in the Shahi Khot Valley in 2002 . Upon the return of the battalions , they were welcomed home and praised by President Bush . In 2003 , elements of the 2nd Brigade Combat Team , 10th Mountain Division returned to Afghanistan to support US forces operating in the western region of the country . Upon the return of the division headquarters and 1st Brigade , the 10th Mountain Division began the process of transformation into a modular division . On 16 September 2004 , the division headquarters finished its transformation . The 1st Brigade became the 1st Brigade Combat Team , while the 3rd Brigade Combat Team , 10th Mountain Division was activated for the first time . In January 2005 , the 4th Brigade Combat Team , 10th Mountain Division was activated at Fort Polk , Louisiana . 2nd Brigade Combat Team would not be transformed until September 2005 , pending a deployment to Iraq . In late 2006 , 2nd Brigade Combat Team was deployed to Iraq supporting Operation Iraqi Freedom . The 2nd Brigade Combat Team undertook combat operations in western Baghdad , in the area known as the " Sunni Triangle of Death , " returning to the US in late 2007 . Around that time , the 1st Brigade Combat Team deployed back to Iraq , staying in the country until 2006 . The 1st Brigade Combat Team and the 2nd Brigade Combat Team deployed to Iraq in the fall of 2009 , as a part of the 2009 – 2010 rotation to Baghdad , Iraq . As of summer 2009 , it was one of only a few brigades in the US Army to be deployed 40 months or more in support of the War on Terrorism .