H&S Co. HQBn HQMC Henderson Hall Arlington Va.

Headquarters and Service Company (H&S Co.), Headquarters Battalion (HQBn), Headquarters Marine Corps (HQMC), located at Henderson Hall in Arlington, Virginia, serves as the primary administrative and support unit for HQMC personnel. Established to provide essential command, control, administrative, and logistical support, H&S Co. ensures the effective functioning of the Marine Corps' senior leadership and staff. Situated adjacent to the Pentagon, Henderson Hall has been a key site for Marine Corps operations in the National Capital Region since its establishment in 1942. Over the decades, H&S Co. has played a vital role in supporting the Marine Corps’ mission at the highest levels, adapting to evolving operational requirements and providing critical support to Marine leaders and their staffs.