During the interwar years, both in Britain and Germany, some believed that bombers could expand the battlefield to the home front of their opponents, damaging morale and disrupting the means of production. The German Blitzkrieg relied heavily on the Luftwaffe's bomber force. From Spain to Barbarossa, the integration of the Kampfflieger forces into the overall strategy proved highly successful. However, once Germany was forced on the retreat, the tactics of the Luftwaffe's bomber forces changed from offensive to defensive actions.

This is the first of two volumes providing highly detailed material on the organization of Luftwaffe bomber units in World War II. The books cover some 50 bomber Geschwader together with their component Staff flights and Gruppen. They also deal with formations, designations, and reorganizations through to the end of the war, with locations, bases, and transfers. The book also includes a comprehensive breakdown of theatres of operations, key battles, and aircraft types that were flown by each unit. The volumes have listings of commanders showing when and where they were in command. Each volume has numerous photos, many in color, depicting bombers in unit markings with close-ups of the unit emblems and badges.