Parts II and III, which follow, deal primarily with the solution of those problems of the naval commander which require familiarity with the entire process, i.e., all of the four steps given above.

For simplicity of presentation, the procedure is described throughout from the mental standpoint of the same commander. The arrangement of subject matter conforms to this basis. The several types of problems, classified according to the source of the incentive ([page 79]), are discussed in connection with the appropriate step. When a problem typical of a previous step arises during the process, the sequence of steps is interrupted thereby, but is resumed by a mental return, on the part of the commander, to the proper earlier step.

The First Step

The mental procedure distinctive of the first step (more fully discussed in Chapter VI) deals with the usual case where a commander becomes acquainted with the nature of his assigned objective through receipt of a directive from his immediate superior, ordinarily in the form of an assigned task or assigned tasks. In the discussion of the first step, this most likely type of problem is chosen for description, i.e., the one where the motivating task (see [page 80]) comes directly from the immediate superior.

For purposes of reference, this problem may conveniently be termed a basic problem. In such a case the original situation which gives character to the problem may be similarly referred to as the basic situation. The full solution of a basic problem always involves a basic estimate of the situation, a basic Decision, a basic plan of operations, and one or more basic directives. It may, as will be shown, also require certain additional directives.

The military Estimate of the Situation, based on the natural mental processes ([pages 19-20] and [43]), is introduced in the first step. The reason for making such an Estimate is to provide a basis for a plan to accomplish the assigned task. The Estimate constitutes a systematic procedure for selection of a correct objective (or objectives), suitable to the appropriate effect desired, feasible of attainment, and acceptable as to the consequences involved in its achievement. The selection of such an objective or objectives involves, incidentally (see [page 44]), the determination, in the proper detail, of the action required.

This estimate procedure is founded on the Fundamental Military Principle ([page 41]). The procedure is the same as previously indicated for the correct selection of objectives (Section II of Chapter IV).

On the basis of a summary of the situation, a recognition of the incentive, and an appreciation of the assigned objective(s) ([page 79]), the estimate of a basic problem enables the commander to obtain, first, an understanding of ([page 43]) the appropriate effect desired. As a result of this procedure, he can then correctly formulate his mission (discussed hereinafter).

For the further understanding of all details pertaining to the situation ([page 43]), the estimate next determines relative fighting strength through a survey of the means available and opposed, as influenced by the characteristics of the theater.

With the basis for solution of the problem thus established, the actual solution ([page 44]), conforming to the system indicated in the Fundamental Military Principle, starts with consideration of pertinent methods of procedure, as tentative solutions of the problem. These take the form of military operations, each denominated a course of action (discussed in detail hereinafter). Each such course embodies, specifically or inferentially, an objective to be achieved for the attainment of the appropriate effect desired. Each course also indicates, in proper detail, the action to be taken. Every pertinent course of action is tested to determine whether it meets the requirements of suitability as to the appropriate effect desired, of feasibility on the basis of relative fighting strength, and of acceptability with respect to the consequences as to costs.