For more than 3 decades, the U.S. Army War College (USAWC) Department of National Security and Strategy has faced the challenge of educating future strategic leaders on the subject of national security, or grand strategy. Fitting at the top of an officer's or government official's career-long professional development program, this challenge has been to design a course on strategy that incorporates its many facets in a short period of time, all within the 1-year, senior service college curriculum. To do this, a conceptual approach has provided the framework to think about strategy formulation. The purpose of this volume is to present the USAWC strategy formulation model to students and practitioners. This book serves as a guide to one method for the formulation, analysis, and study of strategy--an approach which we have found to be useful in providing generations of strategists with the conceptual tools to think systematically, strategically, critically, creatively, and big. Balancing what is described in the chapters as ends, ways, and means remains at the core of the Army War College's approach to national security and military strategy and strategy formulation.