Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.The U.S. Army Ordnance Museum is a museum located at Aberdeen Proving Ground, in Aberdeen, Maryland, USA. The mission of the U.S. Army Ordnance Museum is to acquire, preserve, and exhibit historically significant equipment, armaments and materiel that relates to the history of the U.S. Army Ordnance Corps and to document and present the evolution and development of U.S. military ordnance material dating from the American Colonial Period to present day. 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.