Osprey's Duel series has been something of a mix to me, sometimes an outstanding comparison, sometimes a hack. In this case its and interesting comparison we're looking at; two of the main fighters of WWI in late 1916 and 1917, the SPAD VII and the Albatros DIII. Both were primary and later secondary fighters of the Allied and Axis forces. Mr. Guttman uses the same format Osprey has used in their Duel series (present the vehicle [general and technical], present the combatants, then assess how they did against each other) to good effect. His presentation on the SPAD and Albatros are balanced and provide good insight on each planes development and performance capabilities with the combatants focusing on the French and Germans with good descriptions of British, Italian, and Austro-Hungarian air forces. The combat and analytical components compare these two airplanes very nicely. I'm impressed with the work Mr. Guttman placed in researching this book and call it a solid 4.5 star book for the Osprey series that I'm rounding up to 5 stars.