RAF experts restore World War 2 bomber to its former glory It was famed for its geodetic fuselage structure designed by Barnes Wallis. 1942 Wellingtons were the most numerous aircraft in Bomber Command, until they began to be replaced by more capable four-engined heavy bombers such as Halifaxes and Lancasters. Wellingtons continued to operate with Bomber Command as a training aircraft and served in North Africa, Italy, the Far East and Coastal Command