In the beginning of 30s it were appeared the conception of highspeed bomber that could to outstrip contemporary fighters-biplanes.

One of these bombers was a German aircraft Dornier Do 17. The first flight of the Do17V-1 that was announced as passenger plane took place in November 1934.

The modification Do 17Z with new “Waffenkopf” nose part of fuselage and radial engines was appeared in the end of 1938. Do 17Z-2 bombers have received more powerful engines and armament. They took part in all operations of the early stage of WWII up to 1942.

Since the beginning of 1940 it was produced small number of Do 215 planes that differed with the installation of liquid-cooled DB 601A engines. Do 215B-4 were used as long range photo-reconnaissance planes in the Soviet-German front. In 1941 began production of night fighter modification Do 215B-5. In these planes with powerful armament were installed FuG 202 Lichtenstein radars. They served in the night fighter unit II/NJG 1 up to the beginning of 1944.