The Third Reich produced a multitude of technical masterpieces, often developed and tested in secret in gigantic underground bunker systems. After the end of the Second World War, the victorious powers were overwhelmed by the achievements of German researchers and designers and many developments were immediately adopted, e.g. in aircraft technology and incipient space travel. In this updated and revised new edition, the authors shed light on this exciting complex of topics with first-class visual material that they have collected over many years and some of which they have photographed themselves.