Victory at Sea S01E01 - Design for War: Battle of the Atlantic, 1939-1941

Design for War: Battle of the Atlantic, 1939-1941. World War II begins and the Germans succeed in invading Poland and France. But it is restrained by the British thanks to the vital convoys, Canadian and American naval forces' initial involvement and the Lend-Lease program. Still, the German submarine war increases its crescendo thanks to new French bases.