The Challenge of Change examines how military institutions attempted to meet the demands of the new strategic, political, and technological realities of the turbulent era between the First and Second World Wars. The contributors chose France, Germany, Great Britain, the Soviet Union, and the United States as focus countries because their military institutions endeavored to develop both the material capacity and the conceptual framework for the conduct of modern industrialized warfare on a continental scale. Both editors are on the faculty of the School of Advanced Airpower Studies, Maxwell Air Force Base, Alabama. Harold R. Winton is professor of military history and theory. He is the author of To Change an Army: General Sir John Burnett-Stuart and British Armored Doctrine, 1927-1938. David R. Mets is professor of technology and innovation. He is the author of several books, including The Air Campaign: John Warden and the Classical Airpower Theorists.