FOREWORD The following pages form an abridged translation of a book published in 1916 by Freiherrn von Forstner, commander of the first German U-boat. It was written with the somewhat careless haste of a man who took advantage of disconnected moments of leisure, and these moments were evidently subject to abrupt and prolonged interruptions. Many repetitions and trivial incidents have been omitted in this translation; but, in order to express... more...