They were a secret group of women who achieved what senior naval officers could not – outwitting the Nazis to win the Battle of the Atlantic.
It was 1942 and Germany had brought Britain to the brink of starvation by sinking Allied merchant ships crossing the Atlantic with food and vital supplies on board.
The deadly U-boats were Hitler’s secret weapon, stalking the depths of the seas in packs, ready to torpedo the merchant convoys.
