"Deny enemy base sites in area ABCD by capturing X Island." In such a case the higher commander has indicated the predetermined course of action in the words "by capturing X Island". This expression indicates a specific objective, the capture of X Island. The expression also indicates, though not in any detail, the action to be taken, i.e., it specifies "capture", rather than "occupation", "isolation", or some other form of control (page 8). Any further development of the action is left for the subordinate to determine. The procedure to be followed by the subordinate commander in solving such a problem is described hereafter (page 102) in the discussion of the analysis of courses of action. In any event, it is manifest that there is here no exception to the rule that a course of action, correctly conceived, contains the two elements of objective and action for its attainment. A further example may occur when the higher commander, instead of indicating both the task and the predetermined course of action, indicates only the latter (page 86), by directing "Capture X Island". Once the subordinate has recognized this directive as containing a predetermined course of action, but not a normal task, he realizes that the objective so indicated would ordinarily be left for him to select. He also realizes that the action to be taken for its attainment is left for him to determine, in further detail. In this case, then, what is really a predetermined course of action appears in the guise of a task. When the commander, receiving the directive, has recognized this fact, he proceeds in the manner hereafter indicated (page 103) in the discussion of the analysis of courses of action. In any event, it is manifest that here, also, there is no exception to the rule that a course of action, correctly conceived, contains the two elements of objective and action for its attainment. In such a case as the foregoing, how does the commander recognize that the apparent task is really a predetermined course of action? He could easily go astray because the directive, until analyzed, appears to contain a normal task. The directive indicates an objective, thereby resembling a task. The directive will usually indicate, at least in some degree, the action which the subordinate is to take. Hence, so far as superficial appearance is concerned, the subordinate commander may easily mistake the predetermined course of action for a normal task. However, he discovers the difference when he endeavors to find courses of action which are appropriate to this apparent task.