Complex sentence: In November 1938 Lützow became an instructor at "Jagdfliegerschule" 1 at Werneuchen before moving as "Gruppenkommandeur" to I./JG 3 in November 1939.
Split into simpler sentences: In November 1938, Lützow became an instructor at "Jagdfliegerschule" 1 at Werneuchen. He became "Gruppenkommandeur" to I./JG 3 in November 1939.