The III Corps of the U.S. Army is a field army headquartered at Fort Hood, Texas. This corps is one of four numbered corps within the U.S. Army and plays a significant role in maintaining the military readiness of its forces. The III Corps has seen active service in various conflicts throughout history, including World War II, the Vietnam War, and most recently, the Iraq War. It falls under the authority of U.S. Army Forces Command and is composed of multiple divisions, brigades, and supporting units. Its mission includes planning and executing land operations as well as providing forces to support other Unified Combatant Commands when required. The III Corps’ history, structure, and mission reflect its importance in the U.S. military hierarchy and its significant role in maintaining national security.