EXPERT in medieval warfare, the Crusades, and military history.

 

AUTHOR of multiple books and more than 50 academic articles, essays, and reviews about medieval European and Middle Eastern history, including a 2018 Times Literary Supplement Book of the Year.

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SPEAKER for professional and local audiences, large and small, who has given over 60 invited lectures, conference papers, and community talks across America and abroad.

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PROFESSOR with 23 years of teaching experience in higher education, who teaches military history to field-grade officers at the Army Command and General Staff College (CGSC).

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LEADER in scholarly endeavors, as the past President of De Re Militari: the Society for Medieval Military History, Trustee of the United States Commission on Military History, and Co-Editor of the book series "War and Conflict in Pre-Modern Societies" (ARC Humanities Press).

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SCHOLAR with a Ph.D. in history from the University of Delaware, and a Fellow of the Royal Historical Society.

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NEWS! John will publish two books this year: Seven Myths of Military History (Hackett, available now), and Jerusalem Falls: Seven Centuries of Conflict and Resolution in the Middle Ages (Yale University Press, in October).