Peter Kilduff has produced a landmark volume based on extensive research into Rudolf Berthold’s life and military career to form the most complete account yet about Germany’s sixth highest scoring fighter ace of WWI. Illustrated with over eighty photographs and other artworks, many of which have never been published before, Iron Man tells the tale of this ruthless, fearless and, above all, very patriotic fighter whose perseverance and bravery made him one of the most famous airmen of World War I.