Battle for the Atlantic. Where did the "wolf packs come from?

The battle for the Atlantic is a significant episode of marine history. It took place during the Second World War, it became a grand battle for dominance on the Atlantic communications between the naval forces of the countries of the axis and allies on the anti-Hitler coalition. Germany relied in it on an underwater war, trying to strangle the UK by sea blockade, destroying its merchant vessels. German submarines actively acted in the Atlantic, pose a serious threat to the shipping of the allies. Over time, the heat of the underwater war spread to other regions of the world ocean. The commander of the underwater forces of Germany, Karl Denitz skillfully used the tactics of the Wolf"s Wolf"s tactics against the allied convoys, while striking the enemy’s weak places on long -term communications.
The new book of Vladimir Nagirnyak is a detailed story about people and battles for the Atlantic. Her heroes and victims