thumb|right|The Junkers J 1 monoplane pioneered all-metal construction in 1915. The equivalent German language term is Eindecker, as in the mid-wing Fokker Eindecker fighter of 1915 which for a time dominated the skies in what became known as the "Fokker scourge". The German military Idflieg aircraft designation system prior to 1918 prefixed monoplane type designations with an E, until the approval of the Fokker D.VIII fighter from its former "E.V" designation. However, the success of the Fokker was short-lived, and World War I was dominated by biplanes. Towards the end of the war, the parasol monoplane became popular and successful designs were produced into the 1920s.Angelucci and Matricardi, pp. 109-129.
thumb|right|The Junkers J 1 monoplane pioneered all-metal construction in 1915. The equivalent German language term. is Eindecker, as in the mid-wing Fokker Eindecker fighter of 1915 which for a time dominated the skies in what became known as the "Fokker scourge". The German military Idflieg aircraft designation system prior to 1918 prefixed monoplane type designations with an E, until the approval of the Fokker D.VIII fighter from its former "EV" designation. However, the success of the Fokker was short-lived, and World War I was dominated by biplanes Towards the end of the war, the parasol monoplane became popular and successful designs were prod.uced into the 1920s.Angelucci and Matricardi, pp. 109-129.