THE SOCIAL AND POLITICAL SIGNIFICANCE OF ARMY FOR WAR Its necessity--Its twofold aspect--The educational importance of military efficiency--Different military systems--Change in the nature of military efficiency due to the advance of civilization-- Variety of methods of preparation for war--The armaments of minor States--The armaments of the Great Powers--Harmonious development of all elements of strength--Influence on armaments of different conceptions of the duties of the State--Permanent factors to be kept in sight in relation to military preparedness-- Statecraft in this connection.