Schirlitz served as a watch officer on Luftschiff "L 33" which crashed in Little Wigborough, Essex on 24 September 1916. Schirlitz was taken prisoner of war by the British and was released in November 1919.[1]
Dörr, Manfred (1996). Die Ritterkreuzträger der Überwasserstreitkräfte der Kriegsmarine—Band 2: L–Z [The Knight's Cross Bearers of the Surface Forces of the Navy—Volume 2: L–Z] (in German). Osnabrück, Germany: Biblio Verlag. ISBN978-3-7648-2497-6.
Patzwall, Klaus D.; Scherzer, Veit (2001). Das Deutsche Kreuz 1941 – 1945 Geschichte und Inhaber Band II [The German Cross 1941 – 1945 History and Recipients Volume 2] (in German). Norderstedt, Germany: Verlag Klaus D. Patzwall. ISBN978-3-931533-45-8.
Scherzer, Veit (2007). Die Ritterkreuzträger 1939–1945 [The Knight's Cross Bearers 1939–1945] (in German). Jena, Germany: Scherzers Militaer-Verlag. ISBN978-3-938845-17-2.