The Sopwith type's performance advantage and early successes over the Albatros D.III spurred military interest in the design, especially in Germany and Austria-Hungary. A flurry of fighter prototypes were produced through 1917 and 1918, sometimes reluctantly under pressure from the military. Examples were produced by Albatros, Aviatik, Brandenburg, DFW, Euler, Fokker, Friedrichshafen, LFG Roland, Lloyd, Lohner, Oeffag, Pfalz, Sablating, Schütte-Lanz, Siemens-Schuckert, W.K.F, in Britain by Austin and in the US by Curtiss. Only two companies, Fokker and Curtiss, would see any of their designs into production.