Finland's Continuation War. June 25, 1941 - September 19, 1944. The Continuation War, also known as the Second Soviet-Finnish War, was a conflict fought by Finland and Germany against the Soviet Union from 1941 to 1944, as part of World War II. In Soviet historiography, the war was called the Finnish Front of the Great Patriotic War. Germany regarded its operations in the region as part of its overall war efforts on the Eastern Front and provided Finland with critical material support and milita