Now, on approaching the field of war the readjustment necessary is one of the more difficult ones experienced in life, although it is by no means so difficult as can arise in various situations appertaining to the field of sex. It is an adjustment which practice shews is possible to the large majority of men, but there is no doubt that the success with which it is carried out is extremely variable in different people; and it probably varies in the same person from time to time for either internal reasons or for external reasons relating to the precise environment at the moment, to the precise war experiences through which they may be passing. It is further clear that the readjustment is likely to vary in its success almost entirely with the success with which the earlier adjustments were made during the development of the individual. This statement is meant to carry more than its obvious meaning that the more stable a man is the more surely can he meet the problems and difficulties of warfare; it has a deeper implication. Namely, there is an important relationship between the two phases of difficult adjustment, the current one and the older one. Fundamentally it is the same difficulty, the same conflict; it is only the form that is different. Let us suppose, for instance, that the original difficulty in adjustment was over the matter of cruelty, that in childhood the conflict between strong tendencies of this kind and perhaps specially strong ideals of the contrary sort was an exceptionally sharp one, so that it was never very satisfactorily resolved, though a working equilibrium may have been established on the basis of powerful reaction-formations and various protective devices for avoiding in every possible way contact with the subject of cruelty. Such a man may well have unusual difficulty in adapting himself to the cruel aspects of war, which really means that his long-buried and quite unconscious impulses to cruelty, impulses the very possibility of whose existence he would repudiate with horror, are stimulated afresh by the unavoidable sights and deeds of war. In bayonet practice, for instance, the man is taught how best to inflict horrible injuries, and he is encouraged to indulge in activities of this order from the very thought of which he has all his life been trying to escape. He now has to deal afresh with the old internal conflict between the two sides of his nature, with the added complication that there has to take place an extensive revaluation of his previous standards, and in important respects an actual reversal of them. He has to formulate new rules of conduct, to adopt new attitudes of mind, and to accustom himself to the idea that tendencies of which he had previously disapproved with the whole strength of his ego-ideal are now permissible and laudatory under certain conditions. One would get a very erroneous view of the picture I am trying to draw if one imagined that the process of readjustment in question goes on in the person’s consciousness. This is never entirely true, and often not at all true; the most important part of the readjustment, and often the whole of it, is quite unconscious. We thus see that to obtain a proper understanding of the problems of an individual case, and to be able to deal with them practically in therapeutics, it is often necessary to appreciate the relation between a current conflict and an older one, for the real strength and importance of the current one is often due to the fact that it has aroused buried and imperfectly controlled older ones.