Reach is has large UNSC Military and Intell Bases, as well as a major planet for Mining operations. This planet was one of the most important headquarters for the United Nations Space Command and the main supplier of military and civilian spacecraft. High Command, Fleet Command and the Marine Corps maintained headquarters on Reach, as well as many primary Naval Intelligence bases, which included the highly classified CASTLE Base. Reach's purpose was not solely military however; the surface of the planet also featured farmland and civilian towns and districts. But, no one could tell what was going to happen here.