David Horner is Emeritus Professor of Australian Defence History at SDSC, where he has worked since 1990. A graduate of the Royal Military College, Duntroon, in 1969, he saw active service in Vietnam and served for 25 years in the Australian Regular Army. Later, as a colonel in the Army Reserve, he was the first Head of the Australian Army’s Land Warfare Studies Centre. He is the author/editor of some 32 books and numerous articles on military history, strategy, and defence. In 2004, he was appointed Official Historian of Australian Peacekeeping, Humanitarian and Post-Cold War Operations and is the general editor of this six-volume series. In 2009 he was appointed Official Historian for the Australian Security Intelligence Organisation (ASIO) and general editor of this three-volume series. The first volume of the ASIO series, The Spy Catchers, won the 2015 UK Intelligence Book of the Year prize and was joint winner of the Prime Minister’s Literary Award for history in 2015.