Many major ports and positions were incorporated into the Atlantic Wall , receiving heavy fortifications . Hitler ordered all positions to fight to the end , and some of them remained in German hands until Germany 's unconditional surrender .
Many major ports and positions were made part of the Atlantic wall and received heavy fortifications , Hitler ordered them all to fight to the end and some of them remained in German hands until the unconditional surrender of Axis Forces on May 8 , 1945 .