Unity of command is essential to the economy of time. Warfare in the field was like a siege: by directing all one's force to a single point a breach might be made, and the equilibrium of opposition destroyed.
Read over and over again the campaigns of Alexander, Hannibal, Caesar, Gustavus, Turenne, Eugene and Frederic. ... This is the only way to become a great general and master the secrets of the art of war.
What are the conditions that make for the superiority of an army? Its internal organization, military habits in officers and men, the confidence of each in themselves; that is to say, bravery, patience, and all that is contained in the idea of moral means.
War is a serious game in which a man risks his reputation, his troops, and his country. A sensible man will search himself to know whether or not he is fitted for the trade.