"Through a careful and objective study of the significant campaigns of the world, a professional officer acquires a knowledge of military experience which he himself could not otherwise accumulate. The facts of a given battle may no longer serve any practical purpose except as a framework on which to base an analysis; but when the serious student of the military art delves into the reasons for the failure of a specific attack -- or soberly analyzes the professional qualities of one of the responsible commanders of the past - he is, by this very activity, preparing for the day in which he, under different circumstances, may be facing decisions of vital consequence."
General Dwight D. Eisenhower