Maj. Mark Gillespie, U.S. Army retired, served 20 years in the Army, with his final assignment as operations officer at the U.S. Army Center of Military History, Washington, D.C. He commanded armor and cavalry units during the Cold War in Germany. He coached the Cadet Equestrian Team while an assistant professor in the Department of History at the U.S. Military Academy, West Point, New York. He currently runs the Army Polo Club, The Plains, Virginia, and serves as chairman of the Armed Forces Committee of the U.S. Polo Association. He graduated from West Point in 1977. He has two master’s degrees: one in history from Yale University, Connecticut, and one in international relations from Georgetown University, Washington.