Incorporated in 1943, Garrison formed as a Minuteman club as the result of World War II.  The club members performed volunteer guard duty for power stations, reservoirs, and other strategic installations.  After peace came to the world, club members’ attention shifted to finding a suitable place to build a range for target practice and to hold competitive matches.  On July 1, 1944, Garrison Rifle & Revolver members were instrumental in forming the Associated Gun Clubs of Baltimore, Inc. (AGC) and purchasing the original acreage to found the Marriottsville Range on Marriottsville Road.