On the night of 28 March 1942 the Royal Navy and British commandos assaulted the German-held French Atlantic port of Saint-Nazaire in one of the most audacious raids of the Second World War. Their plan was simple: to drive an old destroyer packed with three tons of explosive at full speed into the outer gate of the Normandie dock. Destroying this would deny the formidable Tirpitz battleship, currently lurking menacingly in the Norwegian fjords, a base from which it could inflict devastation upon the convoys supplying Britain from the United States. Operation Chariot was dramatically successful, but at a great cost. Fewer than half the men who went on the mission returned. In recognition of their extraordinary bravery, eighty-nine decorations were awarded, including five Victoria Crosses.