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Aberdeen Proving Ground

The Aberdeen Proving Ground, also known as APG, is an Army post located on 72,500 acres in Harford County, Maryland. The installation touches the Chesapeake Bay, as well as the Susquehanna and Gunpowder rivers. Created and opened in 1917, APG is the Army's oldest active proving ground. It is composed of two major areas the nothern Aberdeen area and southern Edgewood Area that were combined in 1971. The Edgewood area was previously known as the Edgewood Aresenal. APG was originally used as a center to test military equipment, and the installation's location was chosen due to its closeness to industrial areas. Training for ordnance, or military artillery, started in 1918. Because of that training and research, APG is known as the "Home of Ordnance." Its current role in the federal workplace is as an Army research, training and testing location. All tanks and wheeled vehicles from the past 50 years have been tested at APG, and chemical warfare research is performed at the proving ground. The proving ground employs more than 7,500 civilians and 5,000 military personnel. It is Harford County's largest employer and also one of the state's largest employers. APG is also home to the U.S. Army Ordnance Museum, with an outdoor exhibit featuring equipment and vehicles from different 20th century military conflicts.