Colonel H. R. McMaster is a research fellow at the Hoover Institution. He was a national security affairs fellow at Hoover from 2002 to 2003.
Colonel McMaster has served in numerous command and staff positions in armor and cavalry units in the United States and Germany. He has served at the National Training Center at Fort Irwin, California. He commanded Eagle Troop, Second Armored Cavalry Regiment, in Bamberg, Germany, and Southwest Asia during Operations Desert Shield, Desert Storm, and the occupation of Southern Iraq. He commanded the 1st Squadron, 4th Cavalry, in Schweinfurt, Germany from October 1999 until June 2002. He served as Director of the Commander's Advisory Group for the commander of U.S. Central Command from 2003 to 2004. He is currently commanding the Third Armored Cavalry Regiment in Iraq.
McMaster taught history at the United States Military Academy from 1994 to 1996.
His award-winning book Dereliction of Duty: Lyndon Johnson, Robert McNamara, the Joint Chiefs of Staff, and the Lies That Led to Vietnam was published in May 1997. He has published numerous articles on historical and national security affairs topics in edited volumes, newspapers, magazines, and professional journals. His most recent monograph is entitled Crack in the Foundation: Defense Transformation and the Underlying Assumption of Dominant Knowledge in Future War.
His military decorations include the Silver Star Medal.
McMaster received his B.A. from the United States Military Academy in 1984 and his M.A. and Ph.D. in American history from the University of North Carolina in 1994 and 1996, respectively. His military education includes the Airborne and Ranger Schools, the Armor Officer Basic and Advanced Courses, the Cavalry Leader's Course, the U.S. Army Combined Armed Services Staff School, and the U.S. Army Command and General Staff College. He is a member of the Council on Foreign Relations.