German U Boats & the Battle of the Atlantic: Brest, Lorient, St Nazaire, La Rochelle & Bordeaux Pens April 24-26 2020, £599 plus £50 per night single room supplement, where applicable, places available. During World War II, U-boat warfare was the major component of the Battle of the Atlantic, which lasted the duration of the war. Germany had the largest submarine fleet in World War II, since the Treaty of Versailles had limited the surface navy of Germany to six battleships (of less than 10,000 tons each), six cruisers, and…