An illustrated history of the evolution of the "Emil" version of Germany's most famous World War Two fighter aircraft: How the Bf 109 E changed during production from 1936 - 1941; How to recognize the different versions from the E-0 to the E-9; Documenting the engine variants which led to design changes; Introduction of fuel injection. More than 30 color plates. Wartime photos, drawings from Technical Manuals and color photos of the preserved aircraft.