The 140th MI Battalion, its HHS, A, B and C Companies were stationed at the General George S. Patton, Jr. United States Army Reserve Center, located at 5340 Bandini Boulevard, in Bell, California.
The 307th and, subsequently, 651st Military Intelligence Companies were located north of the battalion, at the Captain Reginald B. Desiderio United States Army Reserve Center on Westminster Drive in Pasadena, California.