To prepare a plan as a basis for directives, or for use as such, the commander first finds it desirable to formulate and assemble the various tasks. The tasks are formulated as a result of his study of (1) those operations which do not require to be broken down, and which may now be rewritten as tasks, and of (2) the component parts of the more extensive operations (See page 162, bottom). Each of the tasks, as now listed, is tested for suitability, for feasibility, and for acceptability with respect to the consequences as to costs. In view of the fact that the operations have all been thoroughly tested, this process now becomes not a formal analysis but merely a check. The Organization of Task Forces and Task Groups The commander now classifies the tasks on the basis of their suitability for accomplishment by appropriate task forces or subdivisions thereof, i.e., task groups. In so doing he endeavors to avoid forming any more classifications than are necessary for the accomplishment of the full effort. Note: In the remainder of this work, the term Task Group, except as may otherwise be indicated, will be understood in the inclusive sense of either "task force" or "task group". Tasks are assigned to task groups on the basis of such factors as the nature and geographical location of physical objectives, the existing disposition of the several units, their capabilities, and their freedom of action. The last-named may be the determinant, and, because of the importance of such considerations, tasks which would otherwise fall to one group might be assigned to another. Features influencing a change might include lack of training of the personnel available in the first group, or the special qualifications of a particular commander, or a justified desire to adhere to a previously determined permanent task organization. Logistics tasks, i.e., those requiring operations for placing logistics measures in effect, require the same careful consideration as do combat tasks. (See page 162). Certain tasks apply to all of the task groups, or pertain to the general conduct of the common effort. Among such may be provision for security, for unity among the subdivisions, and for intelligence activities (page 160). In order to avoid repetition, these tasks are assembled in one group. The commander analyzes the requirements of fighting strength for each task group. He then, from the means available to him, assigns the necessary strength to each group, making adjustment between the theoretical requirements and the actual strength available.