Norman Franks is one of the world's leading authorities on World War 1 fighter aviation, having published some of the seminal works on the subject. He is currently working on a long list of volumes on Great War aces for Osprey's Aircraft of the Aces series.

Berkshire-based Harry Dempsey is a talented profile artist who specialises in fighter aircraft of World War 1. He has illustrated all of Osprey?s World War 1 Aircraft of the Aces titles to date.

Undoubtedly the most famous fighter type to see service on either side during World War 1, the Fokker Dr I was a revelation when it entered service on the western front in 1917. Manfred von Richthofen's JG 1 'circus' was the first Jasta to completely re-equip with the new fighter, and in the skilled hands of its numerous aces the Dr I proved a formidable opponent. The Dr I remained in service on the Western Front until replaced by the superior Fokker D VII in May 1918. Just weeks prior to that, however, Germany's leading ace, the great 'Red Baron', had been killed at the controls of a Dr I.