Bereznyak-Isaev BI-1, First Soviet rocket fighter. The new design was called BI for Blizhnii Istrebitel (close-range fighter), but the letters were also understood by everyone to stand for its inventors: Bereznyak and Isaev.
Saab 21R (1947) was a Swedish twin-boom fighter/attack aircraft made by Saab. It was a jet-powered development of the piston-engined Saab 21 which along with the Russian Yakovlev Yak-15 was one of the only two jet fighters successfully converted from a piston-powered aircraft to enter production
Heinkel He 111H-6 (A1+HT)(WNr 4566) of 9./KG 53 at Gostkino, Leningrad Oblast, late 1942. Kampfgeschwader 53 supported 'Fall Blau' and the German Sixth Army at the Battle of Stalingrad, and took part in the desperate resupply operation after the Russian counteroffensive had encircled the Sixth Army. Attacks were also carried out in northern Russia, against Leningrad. (Colorised by Scott Spencer)
August 27, 1939 The maiden flight of the Heinkel He 178, piloted by company test pilot Erich Warsitz, it is the world's first aircraft to fly under turbojet power, and the first practical jet aircraft.