Although he flew again shortly after the crash his injury required hospitalization in August.[3] Nordmann, who had been assisted by Hauptmann Joachim Müncheberg as a Geschwaderkommodore in training, temporarily replaced him during his absence. On 17 January 1943 Nordmann's Focke-Wulf Fw 190 was involved in a midair collision with Hauptmann Rudolf Busch, Gruppenkommandeur of I./JG 51.