This book describes and illustrates the development of German warplanes in WWI with text, photos, color illustrations, and 30 tables of information including front-line inventories of aircraft by date and specific type. The origins and evolution of each warplane class or category, such as fighters, bombers, and reconnaissance planes are discussed in chapters for each category. Aero engines are also discussed, together with procurement decisions and production quantities. German aviation production and procurement strategies are discussed in the context of the German strategic situation. The three German Fighter Competitions are discussed in particular detail, including all the participating aircraft and their engines. The book is illustrated by 200 rare, contemporary photos, 12 color photos, and 62 color profiles. The book is of interest to aviation historians, enthusiasts, and modelers.