Junkers Ju 87 Franco did know nothing of it and that it was ordered directly by the Luftwaffe. During the Catalonia Offensive in January 1939, the Junkers Ju 87 returned to Spain. On the morning of 21 January 1939, 34 Heinkel He 111, along with some escorts and three Ju 87B, attacked the Port of Barcelona, five days before the city was captured by the Fascists. 29 Republican fighters were defending the city. There were more than 100 aircraft operating over the city and, while a Ju 87 was dive-bombing a ship, a Republican Polikarpov I-15 pilot, Francisco Alférez Jiménez, claimed it destroyed
Junkers J 2 spin on 23 September 1916 in one of the J 2s, and this event, combined with the substandard climbing performance of the J 2 series of test aircraft, caused "IdFlieg" to withdraw any further governmental support (effectively ending the J 2's contract) for the Junkers firm's advanced monoplane designs until a lighter metal, such as duralumin, was selected for such designs. The first attempt to use duralumin for airframe construction by the Junkers firm was the never-completed J 3 mid-wing, rotary engine-powered, aluminum tubing fuselage single-seat monoplane design, of which only the corrugated sheet duralumin-covered wing structures and "bare" tubular