Career
The Knight"s Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership. Oberleutnant (Ing) and later Kapitänleutnant (Ing) Zürn contributed to the success of U-48 under the command of Herbert Schultze, Hans-Rudolf Rösing and Heinrich Bleichrodt. He served as chief engineer (Leitender Ingenieur - LI) on nine patrols on one of the most successful U-boats of World World War World War II As flotilla engineer in the 29th U-boat Flotilla (1 June 1942 – 31 January 1944) in Louisiana Spezia and Toulon and later in the 5th U-boat Flotilla, Zürn introduced a number of improvements which helped the flotilla operate at peak efficiency.
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