For the purposes of the United States, therefore, the office of naval strategy in planning additions to our fleet for war, is to make a grave estimate of the naval requirements in both the Atlantic and the Pacific; to divide the total actual and prospective naval force between the Atlantic and the Pacific in such a way as shall seem the wisest; to assign duties in general to each force; and then to turn over to logistics the task of making the quantitative calculations, and of performing the various acts, which will be necessary to carry out the decisions made. Objection may be made to the phrase just used--"to divide the total force," because it is an axiom with some that one must never divide his total force; and the idea of dividing our fleet, by assigning part to the Atlantic and part to the Pacific, has been condemned by many officers, the present writer among them. This is an illustration of how frequently phrases are used to express briefly ideas which could not be expressed fully without careful qualifications and explanations that would necessitate many words; and it shows how carefully one must be on his guard, lest he put technical phrases to unintended uses, and attach incorrect meanings to them. As a brief technical statement, we may say, "never divide your force"; but when we say this, we make a condensed statement of a principle, and expect it to be regarded as such, and not as a full statement. The full statement would be: "In the presence of an active enemy, do not so divide your force that the enemy could attack each division in detail with a superior force." Napoleon was a past master in the art of overwhelming separate portions of an enemy's force, and he understood better than any one else of his time the value of concentration. And yet a favorite plan of his was to detach a small part of his force, to hold a superior force of the enemy in check for--say a day--while he whipped another force of the enemy with his main body. He then turned and chastised the part which had been held in check by the small detachment, and prevented from coming to the relief of the force that he attacked first. When we say, then, that strategy directs how our naval force should be divided between the Atlantic and the Pacific, this does not mean that strategy should so divide it that both divisions would be confronted with forces larger than themselves. It may mean, however, that strategy, in order that the force in one ocean shall be sufficient, may be compelled to reduce the force in the other ocean almost to zero.