United States. Navy Department. Bureau of Ordnance

Created by Congress in 1862, the Bureau of Ordnance—often called BuOrd—was the Navy office responsible for procuring, storing, and managing naval weapons and ammunition. It handled major areas of naval armament, including guns, torpedoes, mines, and related equipment, making it one of the central technical bureaus in the Navy Department.

Over time, the bureau became deeply involved in research, development, testing, and large-scale supply work. Its role was especially important during periods of rapid military change, when new weapons systems reshaped naval warfare and demanded close coordination between engineers, manufacturers, and the fleet.

BuOrd remained in operation until 1959, when the Navy reorganized its bureau system. Today, its legacy survives in archival collections and historical records that document the development of American naval ordnance across almost 100 years.