The Scanian War was bloody and inconclusive, yet established the modern border between Denmark and Sweden and formed the foundation for comprehensive Swedish military reforms. The book describes and analyses the Scanian War, which was fought from 1675 to 1679 between, on one side, primarily Brandenburg and Denmark Norway and, on the other, Sweden. Sweden’s experiences in the Scanian War laid the foundation for the first substantial reform of the Swedish army since the Thirty Years’ War. Based on what he had learnt, King Charles XI restructured the Swedish army and established a comprehensive military system that enabled Sweden to repeatedly mobilise trained armies during the even more devastating Great Northern War (1700 1721) which followed a generation later. AUTHOR: Professor Michael Fredholm von Essen is an historian and former military analyst who has published extensively on the history, defence strategies, security policies, and energy sector developments of Eurasia. He currently is the Head of Research and Development at IRI, an independent research institute.