Completed the following sentence: The German invasion of Poland in September 1939 began World War II in Europe. Air Force and RAF Bomber Command began bombing raids on German ports and shipping. Battle of the Heligoland Bight in December 1939 ended Royal Air Force (RAF) daylight operations until 1944. Bomber Command persisted in night operations against Germany, which extended to German towns and cities from 10/11 May 1940. <unk> <unk> <unk>
️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk> Wolfgang Falck <unk> I/ZG 1 during the German invasion of Denmark. Immediately after the occupation, Bomber Command appeared frequently to attack German positions, and Falck was able to fly interceptions during dusk.<unk>Immediately after the occupation, Bomber Command appeared frequently to attack German positions, and Falck was able to fly interceptions during dusk. Falck<unk> was sure that a Messerschmitt Bf 110 unit could defend the airspace at night with assistance from radar operators. Falck<unk> was invited to the RLM to express his views to Albert Kesselring, Ernst Udet and Erhard Milch.<unk> Falck<unk> was invited to the RLM to express his views to Albert Kesselring, Ernst Udet and Erhard Milch. Hermann Göring, commander-in-chief of the Luftwaffe, ordered Falck to create a "Nachtjagdgeschwader" at Düsseldorf on 22 June 1940.