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The Spitfire Mk.XIV was the first mass produced Spitfire with the 35 liter Griffon engine in place of the smaller Merlin. The aircraft was used extensively in Europe after D-Day, and to shoot down V-1 ""buzz bombs"". Designed as an experimental Mark V fore-runner of future Griffin-engined Spitfires, it proved so promising, it was named the Mark XIV and rushed into production. Over 1,000 aircraft of this type were manufactured and deployed before the end of World War II. It was the Mark XIV that finally had the range and maneuverability to go against the FW-190 on equal terms. Powered by the two-stage Griffin type 65 engine, the Mark XIV differed from the earlier Spitfires by its larger rudder and elevators, five-bladed ROTOL propeller and four 20mm cannon mounted in its type 'C' or 'E' wing.