Generals-in-chief must be guided by their own experience, or their genius. Tactics, evolutions, the duties and knowledge of an engineer or artillery officer, Gustavus Adolphus, Turenne, and Frederick, as well as Alexander, Hannibal, and CÆsar, have all acted upon the same principles. These have been: to keep their forces united; to leave no weak part unguarded; to seize with rapidity on important points. Such are the principles which lead to victory, and which, by inspiring terror at the reputation of your arms, will at once maintain fidelity and secure subjection. NOTE.“A great captain can only be formed,” says the Archduke Charles, “by long experience and intense study: neither is his own experience enough—for whose life is there sufficiently fruitful of events to render his knowledge universal?” It is, therefore, by augmenting his information from the stock of others, by appreciating justly the discoveries of his predecessors, and by taking for his standard of comparison those great military |