The natural mental processes which normal human beings employ in solving their problems of business, public affairs, or even personal matters, have been previously described as the natural processes for employment in the solution of military problems (see Chapter II). In adapting these natural processes to military requirements (page 43), the only difference imposed is that of studied insistence that the factors peculiar to the conduct of war, as recognized in the Fundamental Military Principle (page 41), receive thorough analytical treatment from the professional viewpoint. The same observations apply when the field of military operations is restricted to that which primarily concerns the naval branch of the military profession. No fundamental difference in the solution of problems is introduced thereby. The only variations in the application of the Fundamental Military Principle are those due to the fact that the sea provides the theater of naval operations with distinctive characteristics (see page 62). The Approach to the Solution Studies of the subject indicate that the successful attainment of an assigned military objective involves the application of mental effort in four distinct steps (see page 3), in fixed sequence, as follows: (1) The selection, by the commander, of a correct objective (or objectives) by achieving which he may attain his assigned objective(s). Such selection includes the determination, in proper detail, of the action required. (2) The resolution of the required action into detailed military operations. (3) The formulation of a directive, or directives, with the intention of immediately inaugurating planned action. (4) The supervision of the planned action. In the chapters which follow, the fundamental procedure distinctive of each of these steps will be treated separately and in the sequence shown. The sequence of the steps is fixed because of the consequential nature of the relationship among the procedures distinctive of the several steps. The complete solution of a problem involves, necessarily, all four steps. Each step deals with a distinctive type of problem, or problems, pertaining to an aspect of the comprehensive problem whose solution requires all four steps. No step after the first can properly be undertaken unless the included problems involved in the preceding steps have been solved. It does not follow that the completion of one step necessarily requires that the next step be undertaken immediately. It will be seen, for instance, that the first two steps are concerned with planning, the latter two more especially with execution. It is not always necessary that a plan be executed; it may be drawn up as a precautionary measure.