His works include The Hard Hand of War: Union Military Policy Toward Southern Civilians, 1861-1865 (1995), And Keep Moving On: The Virginia Campaign, May-June 1864 (2002), and Civilians in the Path of War (co-edited with Clifford J. Rogers, 2002). From July 2008 through June 2010 he occupied the Harold Keith Johnson Chair of Military History at the U.S. Army War College. Among other awards, he is the recipient of Ohio State’s Alumni Distinguished Teaching Award and the U.S. Army Outstanding Civilian Service Medal. He maintains Blog Them Out of the Stone Age, a blog devoted to academic military history and national security affairs.