Fort Sill is a United States Army post located in southwestern Oklahoma. Established in 1869, it serves as a key training facility for artillery and air defense units. The base is home to the Field Artillery School, which provides education and training for soldiers in various artillery systems. In addition to its training functions, Fort Sill plays a significant role in supporting military operations and readiness. The base also houses the U.S. Army Air Defense Artillery School, contributing to the development of air defense strategies and technologies. Its strategic location and facilities make it an essential part of the U.S. military infrastructure.