This book offers a scientific interpretation of the field of military knowledge situated between strategy and tactics, better known as operational art', and traces the evolution of operational awareness and its culmination in a full-fledged theory. The author, a Brigadier General (ret.) in the Israeli Defence Forces and Doctor of History, King's College, London, clarifies the substance of operational art' and constructs a cognitive framework for its critical analysis. He chronicles the stages in the evolution of operational theory from the emergence of 19th-century military thought to Blitzkrieg. For the first time the Soviet theories of Deep Operations' and Strike Manoeuvre' that emerged in the 1920s and 1930 are discussed. The author argues that it is these doctrines that eventually led to the crystallization of the American Airland Battle theory, successfully implemented in the Gulf War.