A major study of the theory and practice of warfare in the twentieth and twenty-first centuries. Using relevant examples from recent history, this book provides a complete introduction to the issues, ideas, concepts, context and vocabulary of modern warfare. The expert team of authors explore the conduct of war across land, sea, air and space in addition to addressing key issues relating to contemporary strategy, weapons of mass destruction and irregular warfare, including insurgency, terrorism and civil war. They provide an incisive and structured grounding in military theory and argue for the importance of understanding warfare within the joint (inter-service) context and as an evolutionary rather than a revolutionary phenomenon. By providing the tools required to truly understand contemporary military doctrine this accessible survey will be an invaluable resource for any student of military history or international relations as well as for military professionals.