Canadian national Dénes Bérnad has specialised in studying Romanian and Eastern European military aviation during World War 2 for the past 25 years. A mechanical engineer by profession , he is also a founding member of the Association to Promote the History of Rumanian Aviation (Bucharest, Romania) and Hungarian Association of Aviation History (Budapest, Hungary).

John Weal is undoubtedly the best artist currently contributing to the Aircraft of the Aces series, having illustrated over a dozen book in the series covering all manner of types from German fighters to Sabre jets in Korea.
John Weal is Osprey's primary Luftwaffe author and artist. He has written, illustrated and/or supplied artwork for several titles in the Aircraft of the Aces series. He owns one of the largest private collections of original German-language literature from World War 2, and his research is firmly based on this huge archive.