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 possible. As a result of the universal liability to service, the whole nation takes part in a war; every class of society suffers and has its pursuits interfered with; everything presses to an early decision, to a prompt crushing of the opponent.

This is attained by defeating the enemy's forces, by occupying the hostile country and seizing the enemy's sources of supply, so that he will be convinced of the futility of further resistance. (Campaigns of 1859, 1866, and 1870-71). Only in the rarest cases will it be necessary to continue the war until the power of resistance of the hostile state is completely destroyed. (American Civil War). The extent to which the enemy's power of resistance may have to be crippled or broken, in order to compel peace, depends upon his tenacity. Political considerations will also have to be taken into account in answering this question. From the military point of view, however, the purpose of every war will always be the complete overthrow of the enemy.

2. STRATEGY AND TACTICS.

Precise definitions of strategy and tactics, clearly fixing the scope of each, have been vainly sought in the past. That efforts in this direction have led to no results is only natural, as tactics and strategy are complementary subjects that often encroach upon each other, while grand tactics is frequently identical with strategy.

Von Bülow, the author of The Spirit of Modern Warfare (1798), calls those movements strategical which are made outside the enemy's sphere of information. Von Willisen considers strategy the science of communications, tactics the science of fighting. Von Clausewitz calls strategy the science of the use of battles for the purpose of the war