 The largest and best known was near Plattsburgh, New York under the command of Captain Halstead Dorey and had such students as Grenville Clark, Willard Straight, Robert Bacon, Mayor John Purroy Mitchel & Bishop James De Wolf Perry.40,000 men (all college graduates) attended the Plattsburgh camp and other sites.They became physically fit, learned to march and shoot, and ultimately provided the cadre of a wartime officer corps.