"GRAF ZEPPELIN" REDISCOVERED Hitler's Showpiece Aircraft Carrier Found A Polish oil firm working in the Baltic Sea has found the remains of the "Graf Zeppelin," Hitler's first -- and last -- aircraft carrier. The ship sank for good sometime after World War II, but exactly where and why is an enduring mystery of the early Cold War. Divers working for the Polish oil firm Petrobaltic on Monday discovered the rusting hulk of Nazi Germany's only aircraft carrier, the Graf Zeppelin, sunk in mysterious circumstances by the Soviets after World War II. Its exact location had been a riddle for almost...