To the World War I allied forces the U-boat attacks on combatants and non-combatants alike was a ruthless strategy without any redeeming aspects. To the German Navy this new and potent tactic was necessary to combat a superior force and introduced a permanent psychological component to naval warfare that had not existed before. This account of the U-boat campaign remains one of the finest English-language histories of the conflict ever written. First published in England in 1931 it thoroughly describes the new kind of warfare that would become a dominant force in World War II. Duplicitous political, maneuvering desperate sessions of strategy the loss of thousands of innocent lives, and the launch of anti-submarine warfare and the convoy system are all presented in this valuable account gleaned from the official records of both sides of the conflict. Published now in the United States for the first time, this illustrated volume is sure to be required reading for everyone interested in the genesis of U-boat warfare.