John E. Fahey is a historian at the United States Naval History and Heritage Command. He has taught at the United States Military Academy at West Point, Georgia Military College, and George Mason University. He earned his MA in European history at George Mason University, where he interned at the Center for Military History, and then went on to Purdue University, where he earned a PhD focused on the late Austro-Hungarian Empire. While at Purdue, Fahey received a Fulbright grant to conduct research in southeastern Poland, and he deployed with the United States 3rd Infantry Division to Kandahar, Afghanistan, as an intelligence officer. He is the author of "Undermining a Bulwark of the Monarchy: Civil-Military Relations in Fortress Przemysl (1871-1914)" in the Austrian History Yearbook, and coauthor of "Habsburg Grand Strategy in the Napoleonic Era" in The Cambridge History of the Napoleonic Wars.