Dornier Do 335 Pfeil (Arrow)

The Dornier Do 335 Pfeil (Arrow) is a heavy fighter built by Dornier for Germany during World War II. The Pfeil's performance was predicted to be better than other twin-engine designs due to its unusual push-pull configuration and the lower aerodynamic drag of the in-line alignment of the two engines. It is considered one of the fastest piston-engined aircraft ever[2] and was Nazi Germany's fastest piston-engined aircraft of World War II.[3][page needed] The Luftwaffe was desperate to get the design into operational use, but delays in engine deliveries meant that only a handful were delivered before the war ended.