The first time the Bf 109 series was introduced was with the German-manned Condor Legion units during the Spanish Civil War. These fighter planes replaced the Heinkel He 51 biplane fighter. Then in 1939 the Bf109 came out with the Bf 109E along with the Daimler Benz DB 601, another fighter plane. Early into the war the Bf 109E completely dominated the Polish PZL fighters. During the invasion in France in May of 1940, the Bf 109E completely outfought the French Morane-Saulnier MS 406’s and the British Hawker Hurricanes.
In the next year the Bf 109E series began to be replaced by the newer Bf 109F series in the 1040’s. The intention of this model was to counter the Spitfire. The Bf 109F series had an engine with increased horsepower and a much more streamlined airframe wand also had a cooling system. Over half of the Luftwaffe single-engine fighter units that were involved in the invasion of the Soviet Union on June 1941 flew the Bf 109F model. This Bf 109 model also was much stronger and had more superiority