This work by Barry C. Rosch provides a comprehensive reference guide to the organizational structure, numerical and alphanumeric codes, unit markings, and individual aircraft identification systems employed by the German Luftwaffe during World War II. Drawing on extensive archival research, wartime documentation, and photographic evidence, the book systematically catalogs unit insignia and call-sign conventions as they evolved between 1939 and 1945. It is richly illustrated with over 1,000 black-and-white photographs and diagrams, offering military historians, modelers, and archival researchers a detailed resource for identifying and cross-referencing Luftwaffe formations, including fighter, bomber, transport, and support units. The text situates the coding systems within the broader Luftwaffe command structure and operational deployment patterns, enabling a clear academic insight into their strategic and administrative functions.