For more than two years the enemy had been using the great naval base and dry dock at St Nazaire to keep their Atlantic fleet alive and kicking. The task of a tiny group of men was to pack a ship with high explosives and to ram the gates of St Nazaire. But to get there they have to sail through a three-quarter of a mile stretch of water where the fighting and fire was fiercest. Against all odds, these men went bravely into battle, knowing that most of their number would be killed and that those who survived would almost certainly spend the rest of the war in captivity….