David J. Bercuson is Professor of History and Director of the Centre for Military and Strategic Studies at the University of Calgary. He has done political commentary for radio and television, co-produced or advised on four documentary films and has written, co-authored, or edited more than thirty books. Holger H. Herwig holds the Canada Research Chair in Military and Strategic Studies at the Centre for Military and Strategic Studies at the University of Calgary. He is the General Series editor of Naval Policy and History and is the author of more than a dozen books on German military history. Together, Bercuson and Herwig are consultants for an American-teamed documentary film about the sunken Bismarck, working alongside Titanic director James Cameron.