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Archive image from page 14 of Dahlgren (1977). Dahlgren dahlgren00mcco Year: 1977 Chronology 5 On October 16, 1918, the Dahlgren 'Lower Station' of the Indian Head facility began its role as a Proving Ground with the successful firing of the 7-inch, 45-caliber tractor-mounted gun.'' Army representatives present dur- ing the firing were favorably impressed, and an order was placed with the Bureau of Ordnance for 36 mounts—the exact number of 7-inch guns the Navy had available to turn over to the Army. By the latter part of 1918, the new Proving Ground consisted of an adminis- tration building
Archive image from page 14 of Dahlgren (1977). Dahlgren dahlgren00mcco Year: 1977 Chronology 5 On October 16, 1918, the Dahlgren 'Lower Station' of the Indian Head facility began its role as a Proving Ground with the successful firing of the 7-inch, 45-caliber tractor-mounted gun.'' Army representatives present dur- ing the firing were favorably impressed, and an order was placed with the Bureau of Ordnance for 36 mounts—the exact number of 7-inch guns the Navy had available to turn over to the Army. By the latter part of 1918, the new Proving Ground consisted of an adminis- tration building, inspector's quarters, Main Battery and Plate Battery bombproofs, eight officers' bungalows, 49 civilian bungalows, two civilian dor- mitories, sanitary sewers, and electric power lines along with storage and maintenance buildings. The Main Battery consisted of 12 emplacements which were laid along with two at the Plate Battery. Extensive dredging was also underway to provide a dock for barges and tugs, and material that was dredged Rear Admiral Ralph Earle was Chief of the Bureau of Ordnance from December 1916 until May 1920. The Naval Proving Ground at Dahlgren was established primarily through his efforts. Dahlgren remained under the jurisdiction of Indian Head until July 1, 1932.
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