Airplane Bf-110G has been designed to reimburse failure of the project of machine Me-210 and has appeared in 1942 as the further development of airplane Bf-110F with more high-power engines DB-605. The airplane was used at defense of objects in territory of Germany from strikes of enemy aircraft - as day time fighter G-1 and G-3 and night radar fighter G-4. Last version was equipped with the radar, and the armament amplified with increase of a serial number. For a night radar fighter overall dimensions, weight and rather weak manoeuvrability of the airplane Bf-110 here were not so important. Airplanes BF-109H-1 - H-4 were equipped with engine DB-605E, a reinforced glider and a retractable tail wheel.
   To the beginning of 1944 night parts Luftwaffe have reached peak of the efficiency, in this moment on their arms was about 320 radar fighters Bf-110, that made about 60 % of all number of the German night fighters.