Admiral Raoul Castex is France’s most important modern naval strategist. Military historian Eugenia Kiesling offers the essence of Castex’s original five volume study, Théories Stratégiques, in a useful one-volume abridgment and a very readable translation. It emphasizes the admiral’s method of strategic analysis while omitting most of the chapters of historical narrative. Included are chapters defining strategy and relating it to policy and geography, analyzing the role of maritime forces and...