The applicatory method bears somewhat the same relation to the method of studying books and hearing lectures that exercises in practical navigation bear to the study of the theory. There is one difference, however, as applied to strategy and navigation, which is that the science of navigation is clearly stated in precise rules and formulæ, and the problems in practical navigation are solved by assigning values to quantities like a, b, c, d, etc., in the formulæ, and working out the results by mathematics; whereas in strategy, no exact science exists, there are no formulæ, and even the number of assured facts and principles is small. For this reason the art of strategy is more extensive and significant relatively to its science than is the art of navigation to its science.

It is a defect of the historical system that it tends to make men do as people in the past have done—to make them work by rule. Clerk's method took no note of what had been done before, but confined itself to working out what should be done at the moment (that is, by what we now call the "applicatory method"), taking account of conditions as they are. By combining the two methods, as all war colleges do now, officers get the good results of both.

In the studies and exercises at the war colleges, note is taken of the great events that have gone by, and of the great problems now presented; by studying the historical events, and by solving war problems of the present, a certain knowledge of the science of naval strategy, and a certain skill in the art are gained. The studies and the problems naturally are of war situations.

Yet every war situation was the result of measures taken in time of peace. If these measures had been unwise on the part of one side—say Blue—in the design of certain craft, or the adoption, or failure of adoption, of certain plans, then Blue's strategic situation in the war would be more unfavorable than it would have been if the measures had been wise.

This proves that it is not only in war that strategy should be consulted; that strategy should be made to perform important services in peace as well; that strategic considerations should be the guide to all measures great and small, that not only the major operations in war, but also the minor preparations in peace, should be conducted in accordance with the principles of strategy, and conform to its requirements. By this means, and by this means only, does a system of preparation seem possible in which all shall prepare with the same end in view, and in which, therefore, the best results will be secured in the least time and with the least labor.

The naval machine having been designed, the various parts having been furnished by the administrative agencies directing personnel and material, and the consumable stores having been provided by the agencies of supply (all under the guidance and control of strategy, and in accordance with the calculations of logistics), the next step is the same as that with any other machine—to prepare the machine to do its work.

The work that strategy has to do in accomplishing the preparation is only in planning; but this planning is not limited to general planning, for it extends to planning every procedure of training and administration, no matter how great or how small. It plans the mobilization of the navy as a whole, the exercises of the fleet, the training of officers and men to insure that the plans for mobilization and fleet exercises shall be efficiently carried out, the exercises of the various craft, and of the various mechanisms of all kinds in those craft, and even the drills of the officers and men, that insure that the various craft and mechanisms shall be handled well. This does not mean that strategy concerns itself directly with the training of mess cooks and coal-passers; and it may be admitted that such training is only under strategy's general guidance. It may be admitted, also, that a considerable part of the training of men in using mechanisms is caused by the requirements of the mechanism itself; that practically the same training is needed for a water-tender in the merchant service as for a water-tender in the navy. Nevertheless, we must either declare that the training of mechanicians in the nary has no relation to the demands of preparation of the navy for war, or else admit that the training comes under the broad dominion of strategy. To admit this does not mean at all that the training of a naval radio electrician is not directed in its details almost wholly by electrical engineering requirements; it merely means that the training must be such as to fulfil the requirements of strategy, for otherwise it would have no value. No matter how well trained a man might be in radio work, his work would be useless for naval purposes, if not made useful by being adapted to naval requirements. The fact that strategy controls the training of radio electricians through the medium of electrical means is only one illustration of another important fact, which is that in all its operations strategy directs the methods by which results are to be attained, and utilizes whatever means, even technical means, are the most effective and appropriate.

The naval machine having been designed as to both personnel and material, strategy has nothing to do with the material in preparing the machine for use, because the material parts are already prepared, and it is the work of engineering to keep those material parts in a state of continual preparedness.

It must be noted, however, that the naval machine differs from most material machines in that its various parts, material as well as personnel, are continually being replaced by newer parts, and added to by parts of novel kinds. Strategy must be consulted, of course, in designing the characteristics of the newer and the novel parts; but this work properly belongs in the designing stage, and not in the preparation stage.

Strategy's work, therefore, in preparing the naval machine for work consists wholly in preparing the personnel. This preparing may be divided into two parts—preparing the existing fleet already mobilized and preparing the rest of the navy.