Most were biplanes and only rarely monoplanes or triplanes. The primary gameplay revolves around dogfights using biplanes and triplanes. The Squadron flew de Havilland observation biplanes and Curtiss JN-4 "Jennies". In 1972, the US Aerobatic Team won the World Championships flying only Pitts biplanes. Specialist sports aerobatic biplanes are still made in small numbers. The air force had only 140 aircraft, mostly outdated biplanes. "Belfast"s aviation capability was provided by two catapult-launched Supermarine Walrus amphibious biplanes. She conducted flying trials with the Fairey IIID reconnaissance biplanes for the next several months. An initial shipment of 16 Vickers Vincent bomber-reconnaissance biplanes arrived in July 1939. They were Soviet-made Antonov An-2 biplanes. The Pup quickly proved its superiority over the early Fokker, Halberstadt and Albatros biplanes. The early fleet contained seven Avro Ansons and three de Havilland DH.86B four-engine biplanes. Curtiss built only a limited number of the JN-1 and JN-2 biplanes. The flight was equipped with four Westland Wapiti biplanes. I realized pretty quickly that dogfighting with biplanes was just not on.