Watch on Soap2day. The impact of new documents from the international conflict that shook the world is enormous. Never-before-seen footage has emerged for the first time from previously secret archives. The murderous encirclement battles in Russia, the Battle of Britain, and the heroic deeds of countless lone fighters in Potsdam complete the circle of horror, from the Polish campaign to the harrowing images of refugee treks in the winter of 1944/45.