On July 16, 2021, the San Antonio Market was officially established by the DHA. The San Antonio Market is comprised of Brooke Army Medical Center, Wilford Hall Ambulatory Surgical Center, 10 stand-alone military treatment facilities, and more than 100 specialty services – staffed by about 11,000 Army, Navy, Air Force, civilian and contract personnel. As the DOD’s only Level I Trauma Center, the market partners with the community’s trauma system to administer critical care to civilian emergency patients across 22 counties in Southwest Texas. Additionally, all military medical enlisted forces train at the Medical Education Training Campus on Fort Sam Houston.