High Quality Content by WIKIPEDIA articles! The Ranks and insignia of the National Socialist Flyer Corps were a paramilitary rank system in use by the National Socialist Flyers Corps (NSFK) between the years of 1933 and 1945. The ranks were designed after paramilitary rank titles of the Sturmabteilung. Most ranks of the NSFK were also used by the National Socialist Motor Corps which maintained its own paramilitary rank system. As with most Nazi paramilitary groups, rank patches were worn on a single collar opposite a badge of unit membership. The exception was for the ranks Standartenführer and above which displayed rank insignia on both collars.