While the German invasion of Poland in September 1939 was a pivotal moment in European history and precipitated the outbreak of the Second World War western historiography has largely neglected Northern Europe. Two questions dominated the course of events, the Anglo-German contest for control of the access to the Atlantic Ocean and the Soviet-German contest for control of their former territories as a precursor to the future Total War they expected to wage against each other. This anthology of 23 essays considers both these issues collectively and provides a new international perspective on the region’s transition from the relative peace of the interwar era to the all out war following the German invasion of the Soviet Union in 1941.