 The fuselage to wing gap was further increased in the D.III, but the temperamental 180 hp Argus As.III limited production to only a handful.Six D.IIs were delivered in July 1917 to the Bulgarian Air Force, and six D.IIIs were delivered in May 1918.Although the "Wickelrumpf" style of wood-structure monocoque fuselage was extremely strong, it was also very difficult and time-consuming to build.