2nd ed., 1992. 256 pp., several photo-ills., + 7 maps. D.j., 24 x 16cm. FINE. With the British air defence system supreme by day, the Luftwaffe concentrated towards nocturnal bombing missions on major cities and ports. For this purpose they perfected the technique to become known as 'pathfinding' ' the illumination of the target area by a special force as a forerunner to an intense bombing raid. This vital role was to be played by Germany's best known bomber unit, Kampfgruppe 100. Within a detailed and full history of this unit from 1939 until 1941, comes a fascinating account of its operations over Britain, as night after night German bombers went about the systematic destruction of Britain's major cities. Much of the Luftwaffe's success was due to Kampfgruppe 100's ability to drop incendiary bombs to start fires in the target area without falling victim to anti-aircraft guns or night-fighters. But high praise also goes to the civilian fire watchers and the fire services. This is the story of Kampfgruppe 100, the First Pathfinders.