Aberdeen Proving Ground (APG) is a U.S. Army facility located adjacent to Aberdeen, Harford County, Maryland, United States. More than 7,500 civilians and 5,000 military personnel work at APG. There are 11 major commands among the tenant units, including:
United States Army Communications-Electronics Command (CECOM)
United States Army Combat Capabilities Development Command (CCDC)
United States Army Test and Evaluation Command (ATEC)
Edgewood Arsenal
Adelphi Laboratory Center
The Army Reserve Information Operations Command
Unified Cross Domain Services Management Office
HQ, U.S. Army Contracting Command
U.S. Army 93rd Signal Network - Network Enterprise Center
Logistics Readiness Center
U.S. Army Cyber Operation Group – 335th Signal Command