Fort Bliss is a United States Army post in New Mexico and Texas, with its headquarters in El Paso, Texas. Established in 1848, the fort was renamed in 1854 to honor Bvt.Lieut.Colonel William W.S. Bliss. It is the largest installation in the United States Army Forces Command (FORSCOM) and second-largest in the Army overall, the largest being the adjacent White Sands Missile Range. Fort Bliss provides the largest contiguous tract of restricted airspace in the Continental United States, used for missile and artillery training and testing, and at 992,000 acres (401,000 ha) has the largest maneuver area, ahead of the National Training Center, which has 642,000 acres (260,000 ha). In August 2025 Immigration and Customs Enforcement (ICE) opened a detention facility named " Camp East Montana" with a capacity of 1,000, eventually 5,000, detainees on Fort Bliss.