Mental power, essential component of fighting strength 18, 217 vital, as basis for professional counsel to State 10 Mental process(es) (See Natural mental process(es)) Military plans and directives (See Directive(s)) Military effort, no easy road to goal of 4 Military operation(s), application of essential elements of a favorable 157 as tentative solutions of problems, denominated as course(s) of action 82 attainment of military objective depends on effective 40, 47 determination of effective 55 possible confusion because of phraseology as to 109 principle of effective 42 Military principles, procedure for developing 29 Military problem(s), (See also Problem(s)) conclusion as to approach to solution of 113 approach to solution of, involves four distinct steps 80 basic 81, 82 effect to be produced and action required to produce it, major considerations in solving 44 use of a form in solution of 110-118 four steps in solution of 79-114 involvements of full solution of 82 major components of 43, 44 solution of 44, 79-114 first step, in 81-106 second step, in 106, 117-164 third step, in 107, 155-179 fourth step, in 107, 183-216 sequence of the four steps in 107-109, 113 sound basis for, establishment of 20, 43 Military situation, every, has both strategical State in military matters 10 Military situation, every, has both strategical and tactical aspects 83 Mission, an assigned task coupled with purpose 87 clearly indicates the appropriate effect desired 121 double or multiple tasks in 88 formulation of, 82, 87, 121 204 manner of expressing 87 restated 135 subsidiary 170, 172, 174-176 Mobility, as a material factor 128 Modification of basic plan, problems involving 201 Morale, discussion of 72, 73 Motivating task 80 Mutual understanding essential to unity of effort 14 final aim of 15 N National and racial characteristics, factors of 126 Natural law, human activities governed by 29 relation of cause, effect and further effect to 19, 32 relation of, to human activity 11 Natural mental process(es), adapted to military requirements 80 application of, to problems of war 11 employed by normal mature human beings 19 studied employment of, ii, 217 Naval directives, types of 195 O