Heinz Schaffer, commander of the German submarine U-977, recounts the events of World War II, his service in the submarine fleet—without hiding its hardships, dangers, and living conditions; the Battle of the Atlantic and the astonishing rescue of a sub that completed a long autonomous passage to Argentina, where the crew faced imprisonment and the charge of saving Hitler. The information presented in the book is especially valuable because it is given from the perspective of the enemy of the USSR in the war.