Confusing the matter further, both the D.II and D.I arrived at the Front in German service at similar times, in July–August 1916.

These improvements were retained, and the airplane was ordered into production with an 89 kW (119 hp) Mercedes D.II inline engine and a single synchronized 7.92 mm (.312 in) lMG 08 machine gun.

The Austro-Hungarian B.IIIs, serialled 04.11 to 04.27, retained the Mercedes D.I engine, and some were armed with a free-firing Schwarzlose MG M.07/12 machine gun mounted above the centre-section.

Compared with aircraft in service at that time, such as the Albatros D.II and the Nieuport 11, this Fokker's design and performance were decidedly unimpressive, and further production did not take place.

Data from German Aircraft of the First World War[2]General characteristics Performance Armament