corps of the Union, commanded by intelligent officers; and the old discipline of Steuben, has from actual deficiency been superceded. _Infantry_ EXERCISE, includes the use of the firelock and practice of the manœuvres for regiments of foot, according to the regulations issued by authority. When a regiment of foot is drawn up, or paraded for exercise, the men are placed two and sometimes three deep, which latter is the natural formation of a battalion. In order to have the manual exercise well performed, it is in a particular manner requisite, that the ranks and files be even, well dressed, and the file leaders well covered: this must be very strictly attended to both by the major, and his adjutant: all officers also, on service in general, where men are drawn up under arms, or without, must be careful, that the ranks and files are exactly even; and the soldiers must learn to dress themselves at once, without the necessity of being directed to do it. The beauty of all exercise and marching, consists in seeing a soldier carry his arms well, keep his firelock steady and even in the hollow of his shoulder, the right hand hanging down, and the whole body without constraint. The musquets when shouldered, should be exactly dressed in rank and file; the men must keep their bodies upright, and in full front, not having one shoulder too forward, or the other too backward. The distances between the files must be equal, and not greater than from arm to arm, which gives the requisite room for the motions. The ranks are to be two paces distant from each other. Every motion must be done with life, and all facings, wheelings, and marchings, performed with the greatest exactness. Hence a regiment should never be under arms longer than three hours without rest. See FIRINGS, MANUAL and MANŒUVRES. _Cavalry_ EXERCISE, is of two sorts, on horseback, and on foot. The squadrons for exercise are sometimes drawn up three deep, though frequently two deep; the tallest men and horses in the centre and front. When a regiment is formed in squadrons, the distance of 24 feet, as a common interval, is always to be left between the ranks; and the files must keep boot top to boot top. The officers commanding squadrons must, above all things, be careful to form with great celerity, and, during the whole time of exercise, to preserve their several distances. In all wheelings, the flank which wheels, must come about in full gallop. The men must keep a steady seat upon their horses, and have their stirrups at a fit length. _Cavalry Sword_ EXERCISE. See SWORD EXERCISE. _Artillery_ EXERCISE, is the method of teaching the corps of artillery the use and practice of all the various machines of war, viz.