T. X. Hammes is a nonresident senior fellow in the Forward Defense program of the Atlantic Council’s Scowcroft Center for Strategy and Security. Hammes is also a distinguished research fellow in the Center for Strategic Research at the Institute of National Security Studies of the US National Defense University.

His areas of expertise include future conflict, the changing character of war, military strategy, operational concepts, and insurgency. He has published three books: Deglobalization and International Security; The Sling and the Stone: On War in the 21st Century; and The 1st Provisional Marine Brigade, the Corps’ Ethos, and the Korean War. He has also published over 160 articles. His publications have been used widely in staff and defense college curricula in the United States, United Kingdom, Canada, Australia, and Singapore. Hammes has lectured extensively at leading academic and military institutions in the United States and abroad.

Hammes earned a Bachelor of Science from the Naval Academy in 1975 and holds a Master of Arts in historical research and a Doctorate in modern history from Oxford University. He is a distinguished graduate from the Canadian National Defence College. Prior to his retirement from active duty, Hammes served thirty years in the US Marine Corps, including command of an intelligence battalion, an infantry battalion, and the Chemical Biological Response Force. He participated in military operations in Somalia and Iraq and trained insurgents in various locations.