John Grehan Author

Martin Mace has been involved in writing and publishing military history for more than twenty years. He began his career with local history, writing a book on the Second World War anti-invasion defences and stop lines in West Sussex. In 2006 he began working on the idea for Britain at War Magazine, This publication has grown rapidly to become the best-selling military history periodical. John Grehan has written more than 150 books and articles on military subjects, covering most periods of history. John is currently employed as the Assistant Editor of Britain at War Magazine.