Форум Breguet's Aircraft Challenge
It starts with the M.3, a two-seater monoplane variant of the M.2 with squared fuselage that was ordered by the army air corps in June 1913 in a quantity of 6 machines. Fokker presented this type first at the "Herbstflugwoche" (autum flying week) at Johannisthal in September, but later it did not pass the requirements of the army only by needing a longer rolling-track for take-off and landing. (That sounds a little strange to me. I haven?t heared of other types ordered by the german army even before they were built)
So Fokker rapidly let built a new type instead, called M.4. The new monoplane was equipped with "dove-wings" and an additional nose wheel. The rear steel-tube fuselage stayed uncovered.
It made it?s maiden flight in November 1913 and was testflown again on the army airfield in Doberitz in January 1914. It was found to be better than its predecessor, but was also not accepted and the order of 6 machines was finally cancelled in February.
Then it is not known if Fokker built a new one or modified the existing plane, but some changes were made to the M.4 - the fuselage was completely covered, it got new wings with ailerons instead of warping (the first time on a Fokker) and the 100 hp Mercedes was replaced by a 120 hp Argus As.II. I`m not sure at all when the engine was changed. This design again caused no interests by the army and Fokker used it (or both) long time in his "Feldflieger-Schule" (army flying school) at Schwerin.