Since its publication in 1911, Sir Julian's Corbett's Some Principles of Maritime Strategy has remained a key document within naval strategic thinking. Yet despite his undoubted influence, Corbett's theories have not been subjected to scientific review and systematic comparison with other naval thinkers. In this assessment, Dr Widen has provided a fresh interpretation of Corbett's legacy and his continued relevance as a classic theorist of naval war. Both the strengths and shortcomings of Corbett's thinking are discussed and reflections offered on their intellectual, practical and doctrinal value. In so doing, Dr Widen has written a book that deserves to be read by anyone with an interest in the past, present or future of maritime strategy.