 Facilities for the Corps of Cadets are located in the Quadrangle, or "The Quad", an area consisting of dormitories, Duncan Dining Hall, and the Corps training fields.The Corps Arches, a series of 12 arches that "[symbolize] the undying spirit of the 12th Man of Texas A&M", mark the entrance to the Quadrangle.All cadets, except those who are married or who have had previous military service, must live in the Quad with assigned roommates from the same unit and graduating class.