"Der Stahlhelm, Bund der Frontsoldaten (German, 'The Steel Helmet, League of Front-Line Soldiers'), commonly known as Der Stahlhelm ('The Steel Helmet'), was a German First World ...
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War veteran's organisation existing from 1918 to 1935. It was part of the "Black Reichswehr" and in the late days of the Weimar Republic operated as the paramilitary wing of the monarchist German National People's Party (DNVP), placed at party gatherings in the position of armed security guards (Saalschutz)." - (en.wikipedia.org 10.08.2021)