Plaster model of the emblematic figure of 'Gunnery' on the Admiralty Arch, Whitehall, painted brown and glazed, by Sir Thomas Brock KCB, RA (1847-1922). It takes the form of a seated female classical figure, looking to viewer's left, cradling a small naval gun in her lap. It has a protective glass dome and base (marked OBJ0524.1) and is one of pair with OBJ0525 ('Navigation').

Brock was a pupil of John Henry Foley, much of whose work he completed on Foley's death in 1874, including on the Albert Memorial. He became a full RA in 1891, the year he redesigned the portrait image of Queen Victoria for the British coinage, being chosen on the grounds that no sculptor, including Boehm, had done so many portraits of her. He was a very successful and efficient public sculptor, his later career being closely connected with work on the Mall, most importantly the Queen Victoria Memorial (1901-24) on which the final figures were not in place until after his death. It was none the less unveiled in 1911 by a delighted King George V who, on the spur of the moment, called for a sword and knighted Brock on the spot. At the other end of the Mall he also executed the bronze statue of Captain Cook (1914) and these figures for Aston Webb's Admiralty Arch (completed in 1911). Though an important practitioner, including in the 'New Sculpture' movement of the early 20th century, changes of fashion have subsequently seen Brock almost forgotten. This figure and its pair, OBJ0525, were presented to the Royal Naval Museum in the Royal Naval College, Greenwich, in March 1923 by Lady Brock, the sculptor's widow. That collection was largely transferred to the National Maritime Museum in 1936.