ARRIERE, Fr. the rear.
Arriere Ban, Fr. See [Ban].
Arriere-garde, Fr. the rear-guard.
En Arriere—marche! Fr. to the rear—march!
ARROW, a missive weapon of offence, slender and pointed, made to be shot with a bow.
Arrow. See [Fortification].
ARSENAL, is a large and spacious building, or number of buildings, in which are deposited all kinds of arms, and other warlike implements; such as cannon, mortars, howitzers, small arms, and every other kind of warlike engines and instruments of death.
ART. Military art may be divided into two principal branches. The first branch relates to the order and arrangement which must be observed in the management of an army, when it is to fight, to march, or to be encamped. This branch is called tactics, and derives its appellation from tactic, which signifies order.
The same appellation belongs to the other branch of military art, and includes the composition and the application of warlike machines.
ARTICLES OF WAR, are known rules and regulations for the better government of an army. The articles of war of the United States underwent an alteration in 1806, and are of date 10th April of that year; they consist of 103 articles; all that relates to the army not comprehended therein, are published in general orders or in established regulations, issued from time to time from the War Department, or by the commanding officer of the army, copies of which are delivered to the officers of the army. In England they may be altered and enlarged at the pleasure of their king. And in certain cases extend to civilians—as when by proclamation any place shall be put under martial law; or when people follow a camp or army for the sale of merchandize, or serve in any civil capacity. It is ordained, that the articles of war shall be read in the circle of each regiment or company mustered once every month, or oftener if the commanding officer thinks proper. A recruit or soldier is not liable to be tried by a military tribunal, unless it can be proved that the articles of war have been duly read to him.