The Airco DH.2 was a single-seat biplane "pusher" aircraft which operated as a fighter during the First World War. The DH.2 was the first effectively armed British single-seat fighter and enabled Royal Flying Corps (RFC) pilots to counter the "Fokker Scourge" that had given the Germans the advantage in the air in late 1915. Until the British developed an interrupter gear to match the German system, pushers such as the D.H.2 and the F.E.2b carried the burden of fighting and escort duties.
Source: Wikipedia, "Airco DH.2", available under the CC-BY-SA License.
As Described In
Red Baron: With a unique design, the D.H.2 has the engine mounted beind the pilot. Although fairly agile, the D.H.2 is a fragile aircraft.