Pershing House has been the residence of the commanding officers of Fort Sam Houston since 1881.Located in Bexar County, San Antonio, Texas, the military post is currently part of Joint Base San Antonio. The house was added to the National Register of Historic Places listings on 30 July 1974. After the Texas annexation to the Union in 1845, the United States Army became a steady presence in what was then designated the Department of Texas, providing a line of defense during both the 1846–1848 Mexican–American War, and the Texas–Indian wars that ended with the 1875 surrender of Comanche chief Quanah Parker at Fort Sill, Oklahoma. The combining of Fort Sam Houston, Randolph Air Force Base, Lackland Air Force Base and Martindale Army Airfield, to create Joint Base San Antonio, took place in 2