Junker Ju88-R High Speed Bomber. Despite a protracted development, it became one of the Luftwaffe's most important aircraft. The assembly line ran constantly from 1936 to 1945 and more than 15,000 Ju 88s were built in dozens of variants, more than any other twin-engine German aircraft of the period. Throughout production the basic structure of the aircraft remained unchanged. The R model was fitted with BMW 801 engines.