John Grehan has written or contributed to more than sixty books, magazines and journals covering a large span of military history from the Iron Age to the present war in Afghanistan.This is his third book in collaboration with Martin Mace. He has been part of the editorial team of Britain at War Magazine since its inception in 2007. 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 in West Sussex. Following the success of this book, he established Historic Military Press, which has published a wide range of titles. Having launched Britain at War Magazine, he has been its editor since the first issue in May 2007.