"Timely, thoughtful, and full of insight. A signal contribution to the field. O'Hanlon's textbook will enable the reader to make sense of a complex, arcane, and hugely important area. It features a superb methodology certain to help make defense analysis more rigorous and more structured. A must-read for those in the defense arena."--General David H. Petraeus, U.S. Army

"This book is a miracle of exposition that makes arcane topics of military analysis both understandable and highly engaging. One of its great strengths is its commonsense modesty, showing how scientific methods in defense analysis are critical to understanding combat yet how they must be complemented by an understanding of the art, history, and politics of warfare. I have no doubt this book will become a staple in security studies."--Harold A. Feiveson, Princeton University

"Never has informed civilian participation in defense policy been more important, but rarely do college or graduate school courses provide the background necessary for civilians to play their needed role. In The Science of War, O'Hanlon crystallizes insight from his years of practicing defense analysis at the highest level and teaching it in several of the nation's finest universities to lay out the landscape of analytical issues in a uniquely comprehensive way."--Stephen Biddle, Council on Foreign Relations

"Michael O'Hanlon is one of the top defense analysts in the United States, and The Science of War is an essential guide to the planning and budgetary issues that have shaped American defense. It is clearly written, replete with insightful examples, and takes on the vexing questions that confront military strategists. The defense policy debate has often been influenced more by polemics than hardheaded analysis. The Science of War is a useful corrective and fills an enormous gap."--Michael R. Gordon, coauthor of Cobra II: The Inside Story of the Invasion and Occupation of Iraq

"Although Clausewitz remains the font of wisdom on war, defense policy for a modern superpower cannot be made responsibly without a range of knowledge about the technocratic complexities of budget tradeoffs, technological alternatives, combat simulation, and logistics. This book is the first to illustrate these issues for audiences outside the Pentagon and gives them better grounds for debating program choices and deciding 'how much is enough.'"--Richard K. Betts, Columbia University

"A very interesting and valuable read. The Science of War explores in operational detail the broad areas that comprise, among other topics, the economics of national security. People who read this book will learn a great deal about very different parts of defense analysis."--Michael J. Meese, United States Military Academy

"This is a significant contribution to the field. The Science of War is a thorough and carefully researched explication and explanation of the public-policy tools for analyzing defense issues. It comes at a time when we have some major defense-policy debates ahead of us. I am not aware of anything quite like this book in the field of defense studies."--Robert H. Dorff, United States Army War College

Michael E. O'Hanlon is a senior fellow at the Brookings Institution who specializes in national security policy. His many books include Bending History and The Wounded Giant.