Force Z was a British naval squadron during the Second World War, consisting of the battleship HMS Prince of Wales, the battlecruiser HMS Repulse and accompanying destroyers. Assembled in 1941, the purpose of the group was to reinforce the British colonial garrisons in the Far East and deter Japanese expansion into British possessions, particularly Malaya and Singapore. Lack of aircraft to protect Force Z, underestimation of the Japanese armed forces, and the political rather than naval motive for its deployment are blamed for the destruction of the force.

HMS Prince of Wales was a King George V-class battleship of the Royal Navy that was built at the Cammell Laird shipyard in Birkenhead. Despite being sunk less than a year after she was commissioned, Prince of Wales had an extensive battle history, first seeing action in August 1940 while still being outfitted in her drydock when she was attacked and damaged by German aircraft. In her brief career, she was involved in several key actions of the Second World War, including the May 1941 Battle of the Denmark Strait where she scored three hits on the German battleship Bismarck, forcing Bismarck to abandon her raiding mission and head to port for repairs. Prince of Wales later escorted one of the Malta convoys in the Mediterranean, during which she was attacked by Italian aircraft. In her final action, she attempted to intercept Japanese troop convoys off the coast of Malaya as part of Force Z when she was sunk by Japanese aircraft on 10 December 1941, two days after the attack on Pearl Harbor.