The Fokker D.I-D.IV were by no means excellent planes, but these biplanes did help fill the gap between the Fokker Eindeckers and the Albatros D.I and D.II. The D.I and D.IV featured inline engines while the D.II and D.III featured rotary engines — the latter using the same double-row rotary as the Fokker E.IV. All of them suffered from workmanship problems and were frequently grounded. In fact, the D.IV was so troublesome it may have never seen combat action, relegated to training duties before its combat career ever began. On 6 December 1916 all Fokker biplanes were withdrawn from front-line service due to structural failures both in static testing and in combat use. Paintable 1:144 models of all four of these transitional planes are now available from https://greatwarplanes.com.
