The Atlantic Ocean was during the second World War one of the most important, if not the most crucial battleground. The great Allied convoys transporting millions of tons of vital war material supplies across the Atlantic to England and the North Sea to the Russian ports. The story of the Battle of the Atlantic was not only written by the German U-boats and their opponents, the convoys. The big battleships Bismarck , Hood , Scharnhorst , Gneisenau , Rodney, King George V and Tirpitz Leave this eventful chapter in military history. Aircraft carriers, cruisers, destroyers, corvettes, and numerous smaller patrol vessels - they all had a considerable share in the outcome of the battle