 The historian Hans H. Hanke summarized Schroeteler's biography in a memorandum written for Bochum's Committee on Culture and Sport () dated 5 February 2014.According to Hanke, Schroeteler remained an agitator for National Socialism his entire life.Hanke based this statement on the fact that Schroeteler had hosted numerous meetings of former German U-boat and British submarine crews in his workshop under the German war ensign, the Reichskriegsflagge.