Cruellest Night : Germany's Dunkirk and the sinking of the Wilhelm Gustloff

She was a refugee ship, a troop transport and a hospital ship. She was carrying 8,000 men, woman and children away from the rampagaing Russian army in an evacuation that has beome known as the 'German Dunkirk'. And she was heading for the grimmest and most horrifying disaster in naval history.