Messerschmitt Bf-109 can be considered as a sample of the machine of this class. Produced before the World War 2 and during in quantity more, than 30500 copies, this airplane became the major part of the German military machine for all period of operations.
   Bf-109 has appeared after the command of the German air forces in the beginning of 30th years has given the task for a fighter a monoplane of the "modern" scheme. First of 13 prototype flown on September, 1935. Bf-109B were deliveries to Luftwaffe (in two versions), equipped two or three 7,92-mm sinchronous machine guns type MG-17, in April, 1937 . Behind Bf-109B has followed Bf-109C (in two versions) with armament of four or five machine guns.
   Messerschmitt Bf-109B and Bf-109C have taken part in Civil war in Spain. They were followed with produced more than 175 machines such as Bf-109D with engine DB-600A (power 986 hp) and armament from one 20-mm of a gun and two 7.92-mm of machine guns. By 1939 these machines acted regarding night fighters, but the majority to the beginning of war were already used, as educational.