Marching in the front; preparing the roads, camping grounds and path for bringing water; protecting the sides; firm standing, fording and entering into water while crossing pools of water and ascending from them; forced entrance into impregnable places; setting or quenching the fire; the subjugation of one of the four constituents of the army; gathering the dispersed army; breaking a compact army; protection against dangers; trampling down (the enemy's army); frightening and driving it; magnificence; seizing; abandoning; destruction of walls, gates and towers; and carrying the treasury--these constitute the work of elephants.