After the war he studied at the Hochschule Esslingen in Esslingen am Neckar and from 1921 to 1928 worked at the Maschinenfabrik Esslingen as a refrigeration engineer. There he met Wilhelm Murr, a Nazi agitator who later became Gauleiter and then Reichsstatthalter of the German State of Württemberg. On 1 April 1928, Drauz joined the Nazi Party as Member No. 80730 and shortly afterwards he and his family moved to Dortmund.