Similarly, the commander now rejects courses of action found to involve excessive consequences as to costs. Here, again, however, he bears in mind the possibilities of later combinations. The commander does not, as yet, make a selection of one course of action in preference to another. He merely desires to restrict further thought, toward his Decision, to those which are found, on the basis of the estimate so far, to be suitable, feasible, and acceptable. He may, however, make a selection to the extent of effecting proper combinations whose applicability has already been demonstrated. The commander also takes stock, at this stage of the estimate, of the relative degree of suitability, feasibility, and acceptability of retained courses, so far as can be substantiated. D. Listing Retained Courses of Action. The foregoing process indicates to the commander the courses of action which may properly be retained as suitable, as feasible, and as acceptable. He therefore draws up a list of retained courses and classifies them according to the degree of their suitability, of their feasibility, and of their acceptability with respect to consequences. This list does not necessarily represent the final combinations of courses of action; the incomplete solutions may yet become part of the course of action finally selected. Also it is not impossible that combinations already made will subsequently be recombined as a result of further analysis. It may be apparent to the commander at this time that he does not have, as yet, any course of action which fulfills the test of suitability as to scope, either originally or by combination. A later conclusion is made (Section V) as to final combinations to achieve full scope. This conclusion, however, may point the way, as later observed, to a Decision adopting an objective short of that which would, if achieved, lead to the accomplishment of the motivating task. SECTION III EXAMINATION INTO THE CAPABILITIES OF THE ENEMY While the commander realizes that the Fundamental Military Principle (page 41) governs the enemy's problem no less than his own, he has to accept more of hypothesis and conjecture (the so-called "fog of war") in applying the principle to the enemy's situation. The method of reflective thinking utilized (Section II) for the commander's own problem calls for certain further safeguards in application to the enemy capabilities, since they are of course usually not so well known to the commander as are his own.