This book presents a detailed description of the efforts of the German Luftwaffe to defend against the night bombing offensive of the British Royal Air Force during the course of World War II. Of course, the Americans were also involved, but their primary attacks were carried out in daylight, so the main German efforts were against the RAF bombers and Mosquito night fighters. The author gives a good account of the course of the war, and the technological development on both sides as the war dragged on. The Luftwaffe’s main problem was their shortage of fuel supplies, and resulting restricted training programs. There were a number of approaches to the problems of locating enemy aircraft flying into German territory, and shooting them down without being shot down in return was a major issue.