Admiral Sir Tom Spencer Vaughan Phillips, was a Royal Navy officer who served during the First and Second World Wars. He was nicknamed "Tom Thumb", due to his short stature. He is best known for his command of Force Z during the Japanese invasion of Malaya, where he went down with his flagship, the battleship HMS Prince of Wales. Phillips was one of the highest ranking Allied officers killed in battle during the Second World War.

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.