McMaster, a Hoover national security fellow from 2002 to 2003, was recently promoted to brigadier general in the U.S. Army, in which he has served in numerous command and staff positions in armor and cavalry units in the United States and Germany. 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.
His military decorations include the Silver Star Medal, the Legion of Merit, the Bronze Star Medal with Oak Leaf Cluster, and the Purple Heart Medal.
McMaster received his B.A. from the United States Military Academy in 1984 and holds a Ph.D. in American history from the University of North Carolina at Chapel Hill. He is a member of the Council on Foreign Relations.