The headquarters on Rock Island Arsenal is responsible for munitions production (ammunition plants) and storage (depots) facilities in 16 states.

Its role is to integrate significant elements of acquisition, logistics, and technology, fostering a closer relationship between the JMC, Program Executive Office-Ammunition and the Army Research Development and Engineering Center.

The JM&L LCMC, headquartered at Picatinny Arsenal, New Jersey, and has a 10-person staff that integrates the efforts of PEO-Ammunition, JMC, and ARDEC.

JMC operates a nationwide network of installations and facilities where conventional ammunition is produced and stored.

The following installations closed on or before 2011 as part of the 2005 Base Realignment and Closure Commission findings This article incorporates public domain material from the United States Army