Lieutenant Dan Garvey thought of himself as just an ordinary young Naval officer - until the Germans sank his ship. For it wasn't until the Germans tried to get him that Dan discovered he was 'The Man They Couldn't Kill'.
A rage for vengeance kept Dan alive; kept him alive and took him right into a secret German lair in the South Atlantic, where it gave him the boldness and the guts to take on a Nazi battleship - and destroy it.
— Description from Comic Vine community (comicvine.gamespot.com).