Nine years later, the 140th was similarly inactivated essentially simultaneously with the activation of the 368th Military Intelligence Battalion, to whom the personnel and facilities were transferred without the lineage and insignia.

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.

Postal Service's processing center to the north and north-east, the National Guard armory to the west, and the adjacent commercial buildings to the east and immediate south, were constructed on what had been Cheli Air Force Station until 1961.

In fiscal year 1991, the battalion's offices and motor pool removed from the facility's World War II–era temporary structures, into newly constructed buildings in the reserve centre; the same postal address was retained.

The 307th and, subsequently, 651st Military Intelligence Companies were located 24 km (15 mi) north of the battalion, at the Captain Reginald B. Desiderio United States Army Reserve Center on Westminster Drive in Pasadena, California.

Modest gains were made with the Army Reserve's institution of the Military Intelligence Special Training Element (MISTE, pronounced "misty") program, in which military intelligence units, including the 140th, were assigned language-qualified, MOS-qualified reserve soldiers (primarily those with prior active duty service) residing hundreds or thousands of miles away.

Given the distance to be traveled, the MISTE soldiers would fly in to drill only bi-monthly, usually at Regional Training Site – Intelligence (RTS-I) at Hamilton Army Airfield north of San Francisco, California.

The platoon was designed to conduct enemy prisoner of war interrogation and provide limited counterintelligence support to the division.

Company C (Electronic Warfare) was built around a large signals intelligence ("SIGINT") processing platoon composed of an analysis section, three non-communication intercept teams and five master control stations.

Crest: That for the regiments and separate battalions of the Army Reserve: On a wreath of the colours, argent and azure, the Lexington Minuteman proper.