This volume describes two campaigns that the Germans conducted in their northern theater of operations. The first they launched, on 9 April 1940, against Denmark and Norway. The second they conducted out of Finland in partnership with the Finns against the Soviet Union. The document is divided into two sections. Part I describes the campaigns in Norway and Denmark (background of German operations, landings, plans, operations in southerncentralnorthern Norway, and the campaign in Norway). Part II details operations in Finland (plans and preparations, Operation Silberfuchs, Finland’s War, the northern theater in 1942, etc.