As of September 2021, there are 12,505 Reservists throughout Maryland, including 5,863 Army Reservists, 3,965 Navy Reservists, 633 Marine Corps Reservists, 1,875 Air Force Reservists, and 169 Coast Guard Reservists.¹ Reserve components own and maintain centers that allow Reservists to assemble, train, carry out administrative duties, and maintain vehicles and equipment. The most common are Army Reserve Centers (ARCs) and Navy Operational Support Centers (NOSCs). In 2021, there were eighteen facilities throughout the state. These included:

• Aberdeen Proving Ground: multiple units without a specified facility
• Abingdon: Abingdon USARC
• Adelphi: US Army Adelphi Laboratory Center
• Annapolis: USARC and U.S. Naval Reserve Center
• Baltimore: 1SGT Adam S Brandt Memorial USARC, Jecelin USARC, PFC Carl Vernon Sheridan USARC, NOSC Baltimore, MCR Center
• Cumberland: Allegany County Soldiers Memorial USARC
• Curtis Bay: USARC
• Fort Detrick: Fort Detrick USARC
• Fort Meade: multiple units and several facilities Fort Meade USARC, MG Baron Jean Dekalb Memorial USARC, CPT John E. Smathers Memorial USARC
• Gaithersburg: MG Benjamin L Hunton Memorial USARC
• Joint Base Andrews: NOSC Washington DC
• Owings Mills: SSG Isadore S. Jachman USARC
• Riverdale: Prince Georges County Memorial USARC
• Rockville: Maus-Warfield USARC
• Upper Marlboro: Southern Maryland Memorial USARC
• White Plains: White Plains USARC

People in Maryland's Reserve units typically serve on a part-time basis, although there are some full-time positions, as well as full-time Army civilians who work in support positions. Reservists are required to participate in training drills throughout the year.

A critical difference between the Reserve and National Guard is the Reserve is under the command of their respective military branch and cannot be called up by the Governor. While National Guard personnel may conduct their periodic weekend training with their unit, Reservists often work side by side with active-duty personnel on military installations during their annual trainings.

Spotlight on the White Plains Army Reserves Center in Charles County

Maryland's newest Army Reserves Center opened in August 2019 in Charles County. It is used for Army Reserves training, day-to-day activities, and is home to a vehicle maintenance shop and a recruitment and retention office.

Notably, the new Army Reserves Center consolidated three existing smaller Maryland Army Reserves into one location and has created 60 to 70 new full-time jobs in Charles County. The new center hosts seventeen units from the 99th Army Reserve Group, each unit containing approximately 200 reservists. Weekend training activities are slated to take place 37 weekends out of the year which will generate significant local spending at the county's hotels and restaurants when reservists are in town.

The new center complements the county's existing military facilities and defense contracting opportunities, including nearby Naval Support Facility Indian Head and other federal contracting organizations.

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¹ Defense Manpower Data Center. DoD Personnel, Workforce Reports & Publications. DoD Data/Reports. ​