William Westerman is a Canberra-based historian, currently working at the Australian War Memorial as an author of the Official History of Australian Peacekeeping Operations in East Timor 2000-2012. He is also the author of the Official History of Australian Operations in Iraq 2003-2011. He completed a PhD at UNSW Canberra in 2014, researching Australian battalion commanders in the First World War. He has written two books, as well as numerous book chapters and journal articles, on aspects of the Australian Army and the First World War. He has also written a short biography of Lindsay Thompson, the 40th Premier of Victoria. He has taught at Monash University and worked as an ANU Teaching Fellow with the Military and Defence Studies Program, Australian Command and Staff College, Canberra. Before his current role he was a researcher for the Official History of Australian Operations in Iraq and Afghanistan. He is also a Fellow of the Royal Historical Society and an Adjunct Lecturer at UNSW Canberra.