The 10th Mountain Division Headquarters and Headquarters Battalion is subordinate to the 10th Mountain Division, and is a permanent formation of the division, as the 10th Mountain Division's command elements are all contained within HHBN.
The battalion consists of five companies; the division's Headquarters and Headquarters Company, known as Headquarters Support Company; Intelligence Sustainment Company, a Military Intelligence company; Division Signal Company, a Signal company; Operations Company and the 10th Mountain Division Band.