Lawrence ‘Larry’ Paterson is a diving instructor who spent years researching German wrecks off Brittany, from which his first book First U-boat Flotilla directly resulted. Since then he has had over 20 books published, mostly on the Kriegsmarine. He attributes much of his interest in World War II to his grandfathers; one of whom was an ANZAC during the First World War, the other a Royal Navy stoker in the Second. Edouard A. Groult is a renowned illustrator who lives and works near London.