The third step makes use of the Order Form. In our naval service, this form is applicable, with certain modifications, to all written directives pertaining to operations other than routine. The subject matter is presented in a logical sequence which experience has shown to be effective. The Order Form assists in the solution of the problem by providing a comprehensive vehicle with which all echelons are familiar. In the fourth step, i.e., the supervision of the planned action, the prime essential is the maintenance by the commander of a Running Estimate (page 107). For this purpose there is a definite technique of which the Estimate Form provides the basis, and by means of which the solution of this important problem is aided. Conclusion As To the Approach to the Solution of Military Problems The foregoing considerations indicate that planned attainment of a military objective requires the application of mental effort in four distinct steps. The sequence of the four steps necessarily is fixed because of the consequential relationship among the problems typical of the several steps. The mission, in the first step, furnishes the nature of the appropriate effect desired. Until modified or revoked by higher authority, it clearly remains the governing influence throughout the entire range of mental effort which, in conjunction with the moral and physical effort, is calculated to result finally in the attainment of the assigned objective. The procedure involved, being natural and universal, is fundamentally the same even in those tactical situations where the commander performs all of the steps in almost instantaneous succession. The Estimate Form, as presented herein, is adaptable to military problems of any nature. The systematic approach represented in the Form is subject to adaptation by the competent commander--provided that the essentials are preserved--in any manner appropriate to his personal preference and to the nature of his particular problem. The essentials of the military Estimate of the Situation, as a specialized use of the natural mental processes, are inherent in the proper application of the Fundamental Military Principle (see page 82). The Estimate Form merely provides a more detailed guide for the use of the Principle. Facility in the use of the Principle will enable the competent commander, once he has formed a proper understanding of the basis for solution of a problem, to solve the problem correctly without reference to the Estimate Form. Reference to the Form may be necessary in problems of broad scope, in order to ensure a complete survey of factors of fighting strength. Time, in such cases, is usually available for purposes of a detailed study. Subject to this exception, the Principle, alone, may be used effectively as a basis for sound military decision,--a fact of particular significance where time (page 22) is an element of immediate concern.