Göppingen Gö 4 which was towed by a Klemm Kl 25. During his stay at Potsdam, the film producer Karl Ritter was making the Ufa film Cadets in Potsdam. The Napola had detached two companies to work on the film, among them Schnaufer. It remains unclear exactly what role he played in this film. Following his graduation from school, Schnaufer passed his entry exams for officer cadets of the Luftwaffe. He joined the Luftwaffe on 15 November 1939 and underwent his basic military training at the Fliegerausbildungsregiment 42 (42nd Flight Training Regiment) at Salzwedel. Schnaufer was appointed as Fahnenjunker (cadet) on 1 April 1940. He then received his flight training at the Flugzeugführerschule A/B 3 (FFS A/B 3—flight school for the pilot license) at Guben, now the Cottbus-Drewitz Airport. He completed his A/B flight training on 20 August 1940. He was trained to fly the Focke-Wulf Fw 44, Fw 56 and Fw 58, and the Heinkel He 72, HD 41 and He 51, the Bücker Bü 131, the Klemm Kl 35, the Arado Ar 66 and Ar 96, the Gotha Go 145 and the Junkers W 34 and A 35. Schnaufer then attended the advanced Flugzeugführerschule C 3 (FFS C 3—advanced flight school) at Alt Lönnewitz near Torgau and the blind flying school Blindflugschule 2 (BFS 2—2nd blind flying school) at Neuburg an der Donau from August 1940 to May 1941. This qualified him to fly multi-engine aircraft. During this assignment he was promoted to Fähnrich (cadet sergeant) on 1 September 1940, to Oberfähnrich (rank equivalent to Company Sergeant Major) on 1 February 1941 and to the officer rank of Leutnant (second lieutenant) on 1 April 1941. He was then posted for ten weeks to the Zerstörerschule (destroyer school) at Wunstorf near Hanover. At Wunstorf, Schnaufer and the radio operator (Bordfunker) Friedrich Rumpelhardt were assigned as an aircrew team on 3 July 1941. Schnaufer's previous radio operator had proved unable to cope with aerobatics, and Schnaufer thoroughly tested Rumpelhardt's ability to cope with aerobatics before they teamed up. Here the two decided to volunteer to fly night fighters to defend against the increasing Royal Air Force (RAF) Bomber Command offensive against Germany. Following their training at Wunstorf, the two were sent to the Nachtjagdschule 1 (1st night fighter school) at Schleißheim near Munich, formerly the Zerstörerschule 1 (ZS 1—1st destroyer school), to learn the rudiments of night-fighting. The night fighter