is a United States Army post located in the cities of Zama and Sagamihara, in Kanagawa Prefecture, Japan, about southwest of Tokyo. Camp Zama is home to the U.S. Army Japan (USARJ)/I Corps (Forward), the U.S. Army Japan Aviation Detachment "Ninjas" (Provisional), the 500th Military Intelligence Brigade, the Japan Engineer District (U.S. Army Corps of Engineers), the 78th Signal Battalion and the 3rd Engineer Group of the Japan Ground Self-Defense Force.