The Halberstadt D.II was a biplane fighter aircraft of the Luftstreitkräfte (Imperial German Army Air Service) that served through the period of Allied air superiority in early 1916. As the first-ever biplane configuration fighter aircraft to serve in combat for the German Empire, it had begun to be superseded in the Jagdstaffeln being formed, by the superior Albatros fighters in the second half of the year, although small numbers of Halberstadts continued in use well into 1917.