B.A., History, The Ohio State University, 1982; M.A., War Studies, Kings College London, 1985; Ph.D., History, The Ohio State University, 1992.
Professor Grimsley received an MA in War Studies from Kings College London in 1985 and a PhD in History from The Ohio State University in 1992. He teaches American military history with an emphasis on the Civil War.
He also maintains WarHistorian.org, a web site focusing on military history and national security affairs. Blog Them Out of the Stone Age, a weblog associated with the site, received the 2005 Cliopatria Award for Best Individual Blog.
In 1994 the OSU chapter of Phi Alpha Theta gave him its Clio Award for Distinguished Teaching in History. He also received the Ben Jones Award for Outstanding Teaching from the College of Humanities in 1997 and Ohio State's Alumni Distinguished Teaching Award in 1999.
From July 2008 through June 2010, Prof. Grimsley served as a visiting professor at the U.S. Army War College, where he held the Harold Keith Johnson Chair of Military History. At the conclusion of his tenure he received the Department of the Army Outstanding Civilian Service Award.