During WWI planes were widely used for reconnaissance. In 1914 French pilots put deflector plates on the propeller of the plane, allowing a machinegun to fire from the front. This allowed arial fights to take place. The Dutch engineer Fokker, working for the Germans in WWI, created the Fokker Eindeckers, a superior air weapon used for bombing and dogfights. This was an important invention because it changed the course of warfare and brought about Air Forces on both sides of WWI.