By June 1940 RAF Bomber Command penetrations of German airspace had increased to the level at which Hermann Göring decreed that a night-fighter force should be formed. The officer tasked with its creation was Wolfgang Falck, "Gruppenkommandeur" of the I./"Zerstörergeschwader" 1 (ZG 1). The night-fighter force began to expand rapidly, with existing units being divided to form the nucleus of new units. By October 1940 "Nachtjagdgeschwader" 1 (NJG 1) comprised three "Gruppen", while "Nachtjagdgeschwader" 2 (NJG 2) and "Nachtjagdgeschwader" 3 (NJG 3), were still forming. It was during this period that Helmut Lent reluctantly became a member of the night-fighter force. At the end of August Lent wrote home, "We are currently converting to night fighting. We are not very enthusiastic. We would sooner head directly for England."