HMS King George V was the lead ship of the five British King George V-class battleships of the Royal Navy. Laid down in 1937 and commissioned in 1940, King George V operated during the Second World War in all three major naval theatres of war, the Atlantic, Mediterranean and Pacific, as well as part of the British Home Fleet and Pacific Fleets. In May 1941, along with HMS Rodney, King George V was involved in the hunt for and pursuit of the German battleship Bismarck, eventually inflicting severe damage which led to the German vessel's sinking. On 1 May 1942 the destroyer HMS Punjabi sank after a collision with King George V in foggy conditions. King George V took part in Operation Husky and bombarded the island of Levanzo and the port of Trapani. She also escorted part of the surrendered Italian Fleet, which included the battleships Andrea Doria and Duilio, to Malta. In 1945 King George V took part in operations against the Japanese in the Pacific.

The BL 14-inch Mk VII naval gun was a breech loading (BL) gun designed for the battleships of the Royal Navy in the late 1930s. This gun armed the King George V-class battleships during the Second World War.