Author, filmmaker, and photographer Simon Dunstan has written more than 50 books on military history, particularly on World War II and Vietnam. They include Fort Eben Emael: The Key to Hitler's Victory in the West (Osprey) and Centurion Universal Tank 1943-2003 (Osprey). He has also written and directed numerous documentaries for the History Channel. Gerrard Williams has been a renowned television journalist for over 30 years, working for the BBC, Sky News, and Reuters. During that time he has covered some of the most significant political events of the late twentieth century, including the wars in the Persian Gulf, Rwanda, and Bosnia, as well as the 2004 tsunami in the Indian Ocean.