The Supermarine Spitfire F Mk. 24 is a British fighter aircraft which served in the last stages of World War II and as Britain's main fighter aircraft until its replacement by jet fighters. It represents the final iteration of the Spitfire, equipped with a Rolls-Royce Griffon engine that allows it to reach 753 km/h and two pairs of modernised Hispano-Suiza HS.404 autocannons, the Mark V versions. Mark 24s flew over Eastern Europe throughout the last months of World War II, severely outmatching Soviet piston fighters.