In 1914, the armies and navies that faced each other were alike down to the strengths of their companies and battalions and the designs of their battleships and cruisers. Differences were of degree rather than essence. During the interwar period, the armed forces grew increasingly asymmetrical, developing different approaches to the same problems. This study of major military innovations in the 1920s and 1930s explores differences in innovating exploitation by the six major military powers. The comparative essays investigate how and why innovation occurred or did not occur, and explain much of the strategic and operational performance of the Axis and Allies in World War II. The essays focus on several instances of how military services developed new technology and weapons and incorporated them into their doctrine, organization, and styles of operations.

Armored warfare : the British, French, and German experiences / Williamson Murray -- Assault from the sea-the development of amphibious warfare between the wars : the American, British, and Japanese experiences / Allan R. Millett -- Strategic bombing : the British, American, and German experiences / Williamson Murray -- Close air support : the German, British, and American experiences, 1918-1941 / Richard R. Muller -- Adopting the aircraft carrier : the British, American, and Japanese case sstudies / Geoffrey Till -- Innovation ignored-the submarine problem : Germany, Britain, and the United States, 1919-1939 / Holger H. Herwig -- From radio to radar : interwar military adaptation to technological change in Germany, the United Kingdom, and the United States / Alan Beyerchen -- Innovation : past and future / Williamson Murray -- Patterns of military innovation in the interwar period / Allan R. Millett -- Military innovation in peacetime / Barry Watts and Williamson Murray.