In 1916, production of an extraordinarily large tri-plane got underway in Kahl in northern Bavaria. The Project was financed by Brüning, a plywood manufacturer, and the Deutsche Bank; it also enjoyed backing from German military authorities. In summer 1917, the Deutsche Bank withdrew its finances. Attempts by Brüning to get financial backing from the German Navy failed. Instead, the project was taken over by Mannesmann-Mulag, with production of the plane being moved from Hanau to Köln-Westhoven. When World War I ended in November 1918, the plane was unfinished. Allied inspectors discovered remnants of the aeroplane in spring 1919, writing a report about their finding. Other documentary evidence about this plane dates from 1917, when the plane’s constructor, Villehad Forssman, met the Swedish naval attaché in Berlin, telling him about the plane. The Forssman tri-plane, if completed, would have been the largest aeroplane in operation worldwide. Its operational range and bomb carrying capacity exceeded the capacities of all other strategic bombers, German or other. According to Forssman, the aeroplane was to be as a strategic bomber against targets in England. Previous research about the Forssman tri-plane has been incomplete, and has misinterpreted the plane’s development as well as the qualifications of its constructor.