Renowned German aviation specialist Manfred Griehl has collected a unique and valuable selection of photographs of Luftwaffe projects that never made it into battle. They remained on the drawing board or at prototype stage either because they were deemed unsuitable or the developers simply ran out of time and the projects never went into production.

Most photographs come from the development sites and testing grounds of the major manufacturers of Nazi Germany: companies such as Dornier, Junkers, Focke-Wulf and Heinkel all received funding from the government to develop bigger and faster aircraft. A huge amount of private testing went on with major organizations such as Daimler-Benz, BMW and Siemens investing huge amounts in new engine systems and other advances such as radar.

This book also details the innumerable alterations that were made to existing service aircraft to equip them for new roles. There are examples of Fw190s developed for the delivery of chemical and toxic weapons, the high altitude Junkers EF 61, the early prototype WNF 342 helicopter as well as numerous examples of developmental jet fighters that could very well have been realized had it not been for the effectiveness of the Allied bombing campaign in restricting the supply of necessary materials.