The Hannover CL. II was an escort fighter produced in Germany during World War I designed in response to a 1917 requirement by the Idflieg for such a machine to protect reconnaissance aircraft over enemy territory. It was a compact biplane of largely conventional configuration with single-bay staggered wings of unequal span. The fuselage was a thin plywood paneled wooden monocoque design very similar to the style of fuselage in Robert Thelen's Albatros series of single-seat fighters.
Made by Hannoversche Waggonfabrik.