Fort Riley, referred to as "Home of America's Army' plays host to the Army's 1st Infantry Division, also known as the "Big Red One". Fort Riley is a historical old cavalry post, with many well-preserved buildings and monuments. Fort Riley is one of the army's premier force projection platforms and the post has a large area, 100,671 acres of which 70,926 are contiguous, to handle Battalion Task Force level maneuvers and live fire training.