Fokker D.IV

The Fokker D.IV was a German fighter biplane of World War I, a development of the D.I. It had a more powerful Mercedes D.III engine, and the first Fokker front-line design to use ailerons in place of wing warping from the start for roll control. The aircraft was purchased in small numbers (40) by the German Army and the Swedes bought 4.

Operators

 * German Empire
 * 40 aircraft.
 * 🇸🇪 Sweden
 * Swedish Air Force - Four aircraft.