Noted aviation historian Robin Higham has written this comparative study of the evolution of the French and British air arms from 1918 to 1940 to determine why the Arm e de l'Air was defeated in June 1940 but the Royal Air Force was able to win the battle over Britain in September. After analyzing the structure, men, and mat riel of the air arms, and the government and economic infrastructure of both countries, he concludes that the French force was...