Established in 1919 and officially opened to the public in 1924, to exhibit captured enemy equipment and materiel, the Museum was located in Building 314 of the Aberdeen Proving Ground and operated by the U.S. Army until 1967. Co-location with APG provided convenient access to the equipment being delivered to APG for testing after World War I. In 1965 local citizens formed the tax-free Ordnance Museum Foundation, Inc. to establish and operate a museum of these military artifacts. The Foundation is not affiliated with the U.S. Army nor the Department of Defense. The Foundation began operation of the Museum in the early 1970s, upon opening in Building 2601 on the Aberdeen Proving Ground (until its closing in September 2010) and operates the Ordnance Museum until this day.