Fort Huachuca Main Post, Arizona

Major communications and intelligence center for the military. Located on 73,272 acres (114 square miles) in southern Arizona, Huachuca is home to such units as the U.S. Army Intelligence Center, the Information Systems Engineering Command, the 9th Army Signal Command, and the Joint Interoperability Test Command. Also at Huachuca are field test facilities and test ranges for communications systems and equipment, including an electronic proving ground complex, associated with White Sands Missile Range and Aberdeen Proving Ground.