In June 1941, JG 51 and the majority of the Luftwaffe were transferred to the Eastern Front in preparation for Operation Barbarossa, the invasion of the Soviet Union. On 20 July 1941 Nordmann was appointed to command IV./JG 51, succeeding Major Friedrich Beckh who was selected to command JG 51 as Geschwaderkommodore (Wing Commander). Command of the 12.