The Avia B.135 (RLM designation Av-135) was a Czechoslovak cantilever monoplane fighter aircraft. It was the production version of the Avia B.35 developed shortly before the war, based on the B.35/3 prototype but featuring a new all-metal wing.
The Avro 530 was a British two-seat fighter biplane designed in 1916 to compete with the Bristol F.2A. The plane itself was designed in 1916, but not flown until July 1917. It was of fabric-covered wooden construction, powered by a 200 hp (150 kW) Hispano-Suiza engine.
