P. G. T. Beauregard
Colonel David E. Twiggs, the commanding officer of the 2nd Regiment of Dragoons, was chosen as the first commandant of the Post. During this time, Ulysses S. Grant, Robert E. Lee, George B. McClellan, J.E.B. Stuart, P. G. T. Beauregard, were all stationed at the Barracks, although not at the same time.