Rock Island Arsenal Community

Rock Island Arsenal


Soldiers from the 181st Infantry Brigade, First Army, render honors with M2A2 105 mm howitzers during a change of responsibility ceremony at Rock Island Arsenal. (Photo by Staff Sgt. Ian M. Kummer)

Rock Island Arsenal Garrison is an active U.S. Army facility on a 946-acre island in the Mississippi River, between Davenport, Iowa, and Rock Island, Illinois. The arsenal is in an area known as the Quad Cities, a once thriving riverboat community. Today, Rock Island Arsenal Garrison is the nation’s largest government owned and operated arsenal.

Rock Island Arsenal Garrison serves all branches of service, including National Guard and Army Reserve troops. It is primarily a civilian installation, with more than 8,170 civilian employees. The active-duty military population is around 817. Major units and organizations on the installation include the Armament Research, Development and Engineering Center; Army Sustainment Command; Edgewood Chemical Biological Center; First Army; Joint Manufacturing and Technology Center; and Joint Munitions Command. For a full list of units and tenants at Rock Island Arsenal, visit

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