Attempts by the Red Army to break through the German perimeter early in February were fought back, with the Fourth Army receiving heavy artillery support from the German cruisers Admiral Scheer and Lützow firing across the Haff from the Baltic sea into the Frauenburg end of the pocket [REF].
Though the German forces in East Prussia had no realistic hope of victory, and were severely short of manpower, ammunition, and fuel, they continued to offer strong resistance, inflicting extremely high casualties (584,788+) on the Red Army during the East Prussian Operation [REF].