||The Sopwith Pup was a small fighter aircraft designed in response to the growing superiority of German aircraft in the skies over the Western Front in late 1915. Officially known as the Sopwith Scout or Type 9901, it was christened the "pup" by its pilots because another larger Sopwith aircraft, the 1 ? Strutter was also then in service. It proved both under-armed and under-powered in combat, but its manoeuvrability at high altitude gave it an edge over the German fighters. One Australian pilot recalled that it was a "beautiful little thing to fly". Almost 1,800 Pups were produced during the war. While it never saw service with Australian operational squadrons, it was employed as a trainer.