* The Kookaburra War: The Australian Army in World War II (2004): This comprehensive and highly acclaimed book provides a captivating account of the Australian army's experiences in World War II, covering various theaters of war and offering a nuanced perspective on their struggles and triumphs.
* Zero Hour: The True Story of the Battle of the Bulge (2010): This detailed and gripping narrative explores the pivotal Battle of the Bulge, a crucial turning point in the Western Front, offering fresh insights into the desperate fighting and the bravery of soldiers on both sides.
* The War That Never Was: Japan’s Secret Strategy to Take Australia (2013): This fascinating exploration reveals Japan's ambitious but ultimately unsuccessful plan to conquer Australia during World War II, highlighting the potential consequences and the strategic decisions that ultimately prevented it.
* Kokoda: The 1942 Campaign (2015): This immersive and authoritative account delves into the harrowing Kokoda Track campaign, a vital battle fought against Japanese forces in Papua New Guinea, showcasing the resilience and sacrifices made by both sides.
* The Lost Victories: The Forgotten Stories of the Australian Army (2021): This latest work examines several lesser-known battles and campaigns involving the Australian army in World War II, bringing to light the courage and contributions of soldiers often overlooked in historical narratives.
In addition to these major works, Ham has also authored several other books and essays, including The Second World War: An International History and The Battle for the Pacific (with David Horner). His writing is characterized by meticulous research, clear prose, and a deep understanding of military strategy and human experience in warfare.