This book is a very good treatment of the process by which Clausewitz's work would come to influence the English-speaking world. Clausewitz is recognized today as one of the pillars of strategic thought. His influence, however, would not be felt in his day within the English world because of his service to the Prussian army. His insights were very strong, but they were relatively unnoticed because the English possess their own traditions and disliked those who had worked for their enemies. But as time went on, the English would search, slowly, for thought that would help them improve their fighting skills. They would start to find this in Clausewitz's work, but it took decades for its effect to sink in and be recognized. The author does a great job of detailing how this occurred and why it mattered. A good book, but not for many readers because of its narrow topic.