The existence of a national style of warfare, an American Way of War, has been used to characterize fundamental elements of American military strategy. During his tenure as Chairman of the Joint Chiefs of Staff, General Colin Powell became the proponent for a strategic framework to guide the consideration of how military forces should be used to support national policy objectives. His framework was reflected in the Chairman's National Military Strategy published in early 1992 after Desert Storm under a concept titled Decisive Force. This book traces the development and evaluates the merits of a New American Way of War embodied in the Decisive Force concept. Military attitudes and lessons about the utility of force are drawn from four recent conflicts.

As Clausewitz observed, ""In war more than anywhere else, things do not turn out as we expect."" The essence of war is a competitive reciprocal relationship with an adversary. Commanders and institutional leaders must recognize shortfalls and resolve gaps rapidly in the middle of the fog of war. The side that reacts best (and absorbs faster) increases its chances of winning. Mars Adapting examines what makes some military organizations better at this contest than others. It explores the institutional characteristics or attributes at play in learning quickly. Adaptation requires a dynamic process of acquiring knowledge, the utilization of that knowledge to alter a unit's skills, and the sharing of that learning to other units to integrate and institutionalize better operational practice. Mars Adapting explores the internal institutional factors that promote and enable military adaptation. It employs four cases, drawing upon one from each of the U.S. armed services. Each case was an extensive campaign, with several cycles of action/counteraction. In each case, the military institution entered the war with an existing mental model of the war they expected to fight. For example, the U.S. Navy prepared for decades to defeat the Japanese Imperial Navy and had developed carried-based aviation. Other capabilities, particularly the Fleet submarine, were applied as a major adaptation. The author establishes a theory called Organizational Learning Capacity that captures the transition of experience and knowledge from individuals into larger and higher levels of each military service through four major steps. The learning/change cycle is influenced, he argues, by four institutional attributes (leadership, organizational culture, learning mechanisms, and dissemination mechanisms). The dynamic interplay of these institutional enablers shaped their ability to perceive and change appropriately.