 However, some missions were carried out, achieving moderate success but at the price of severe losses.One restored Bestmann on the tank buster configuration is on display at the Deutsches Technikmuseum Berlin.Test pilot and sister-in-law of Claus von Stauffenberg Melitta Schenk Gräfin von Stauffenberg was flying a Bücker Bü 181 when she was shot down and fatally wounded in 1945.