Even with fighting strength adequate to overcome enemy opposition and physical handicaps, deficiencies and omissions within a commander's own field may become effective checks to further progress unless avoided through the exercise of foresight. To this end, it is desirable to consider certain possibilities which are likely to promote freedom of action if properly exploited, and to restrict it if neglected. To a considerable extent, a commander has within his own control the degree of influence which his force will exert in the creation or the maintenance of a favorable military situation. The power applied by a military force is determined not only by the fighting strength of its component commands, but also by the degree of coordination of their several efforts in the attainment of the objective (see also page 12). Whatever the inability of the commander to influence the other aspects of a situation, the ability of his command to act unitedly is a matter largely in his hands. When time permits, subordinate commanders, apprised of contemplated tasks in general terms, may be called upon to submit recommendations as to the detailed instructions to be issued them, as well (page 66) as to the means to be allotted for the purpose. By this procedure, individual initiative (page 15) is fostered and the higher command enabled to utilize the first-hand knowledge and experience gained on lower echelons without, however, divesting the higher command of any of its responsibility. The command system may provide for unified action through unity of command or through cooperation resulting from mutual understanding. On the assumption that commanders are competent and that communications are adequate, unity of command is the more reliable method. However, it cannot be obtained everywhere and at all times, because of the necessary decentralization of the command system in areas distant from the commander. In such areas, unity of effort may sometimes be assured by provision for local unity of command. At other times, unity of effort may depend entirely on cooperation between adjacent commands within the same area. (See page 12.) Organization (see page 13), the mechanism of command, is most effective when, through the establishment of authority commensurate with responsibility (page 12) and through the assignment of tasks to commanders with appropriate capabilities (see also page 66), the highest possible degree of unity of command is attained. The command organization and mutual understanding are of primary importance as methods of ensuring maximum power with available fighting strength, and of affording consequent maximum contribution to freedom of action.