The United States Army’s oldest active proving ground. It was established on October 20, 1917, six months after America entered World War I, as a facility where ordnance materiel could be designed and tested close to the nation’s industrial and shipping centers. Aberdeen Proving Ground occupies more than 29,000 hectares in Harford County, Maryland, and is home to the Ballistic Research Laboratory where, during the 1950s and early 1960s, important work was done on integrating electronic computers, space studies, and satellite tracking.
