 The coastal artillery's reason for existence, along with that of the entire garrison, soon disappeared, however, when most of the Royal Navy's dockyard was closed in 1951, leaving only a small supply base (HMS Malabar).Following this, the last Regular Army unit (a company of the Duke of Cornwall's Light Infantry) was withdrawn in 1957.In 1953, the last battery of coastal artillery (the St. David's Battery) was removed from use, and the BMA converted to the infantry role (although continuing to wear the Royal Artillery cap badge and uniform), joining the BVRC at Warwick Camp.