Like the industrial revolution before it, the information technology revolution appears to be creating a new ruling class, a new economy and a new society. Information technology is also transforming military operations and warfare. A vast literature on the revolution in military affairs (or "RMA") cites the important (indeed, dominant) role of information technology in enabling a new military revolution. This volume challenges conventional wisdom not by claiming that information's impact on military operations is not "positive" or "transformative" but by claiming its impact is not "new". Previous periods of military revolution can also be characterized as information revolutions. Through the close examination of six case studies of military transformation during the industrial age, the contributors to this volume demonstrate how the employment of emerging information systems was critical to realizing a major boost in military effectiveness. The most successful adaptations to the new environment were made by the most skillful users of information. This volume draws upon the expertise of leading military historians, political scientists and defense practitioners to craft a set of original essays that provide the first retrospective examination of how information affects the process of military revolution. This book was previously published as a special issue of the Journal of Strategic Studies.