"special leader"; in full: Sonderführer mit militärischer Kommandobefugnis, "special leader with military command power"), abbreviated Sdf or Sf, was a specialist role introduced in the Wehrmacht of Nazi Germany in 1937 for the mobilization plan of the German armed forces.
Draftees were called up for Sonderführer to almost all branches of service (Heer, Luftwaffe and Kriegsmarine) or special forces, equivalent to assignments or appointment of military personnel in the hierarchy of the Wehrmacht.
His campaign to unify the Breton language has had a lasting influence in the French region of Brittany[2] Sonderführer were called up to military service to use the skills and expertise of specialists on defined function positions.
[3] The legal state of the Sonderführer was equivalent to those of a soldier in the meaning of the Nazi Service Act Legislation.
In the pension legislation of the Federal Republic of Germany Sonderführers are explicit equivalent to regular soldiers.
From 1940 to 1942 an entirely different type of shoulder board was worn: this was like the army equivalent but the braid used incorporated repeating black-white-red chevrons, giving the whole a checkered look.
It characterized the professional skills of the SS specialist, e.g.: so-called special cuff career insignia (de: Sonderlaufbahnabzeichen) on the uniform in 1935 As of 1935: Fundamental, it was possible to add any use any SS-rank in conjunction with a SS-Sonderführer assignment to any existing SS-service rank.