The art of employing artillery and other fire-arms against an enemy with the best effect, including every thing that is necessary to a complete knowledge of the most approved methods of mounting, transporting, charging, directing, discharging, etc.the above. It includes also a knowledge of pyrotechny, the theory, force, and effect of gunpowder, the proportions of powder and ball required to produce a proposed effect; and rules for computing the range of the projectile, the elevation of the piece, etc.