Original Wartime Studioportrait of Knight’s Cross Holder Franz August Sorko. Oberstleutnant Franz August Sorko (09.08.1891 † 19.07.1941) earned the Ritterkreuz on June 20, 1940 as Oberstleutnant und Kommandeur of II. Bataillon/ Gebirgsjäger-Regiment 137 of the 2. Gebirgs-Division. Measuring 6,7×9,4 cm.