Firing by half battalions, the line advancing. The left wings halt, and the right ones continue to march 15 paces, at which instant the word march being given to the left wings, the right at the same time are ordered to halt, fire, and load; during which the left march on and pass them, till the right wings, being loaded and shouldered, receive the word march, on which the left ones halt, fire, &c. and thus, they alternately proceed.

Firing by half battalions, the line retiring. The right wings come to the right about and march 15 paces, are ordered to halt, front, and when the left wings have gained 15 paces, and have received the word halt, front, the right wings are instantly ordered to fire, load, about, and march 15 paces beyond the left ones, where they receive the word halt, front, on which the left wings fire, &c. and thus alternately proceed.

In manœuvring many battalions there should be a regulating battalion named, by the half battalions of which each line may move, halt, and fire: the commander of each line to be with such half battalion and in giving his several commands, to have an attention to the general readiness of the line, especially after loading, that the whole be prepared to step off together at the word march. The firing of the advanced wing succeeds the march, or the halt, front, of the retired wing instantly; and each half battalion fire independent and quick, so that no unnecessary pauses being made betwixt the firing words, the fire of the line should be that of a volley as much as possible; and the whole being thereby loaded together, to be ready for the next command of movement. In these firings of the line advancing or retiring, the two first ranks fire standing, and the rear rank support their arms, and may change places at the second fire with the centre rank.

In this manner also may the alternate battalions of a line advance or retire, and when the whole are to form, and that the last line moves up to the first, every previous help of advanced guides will be given to ensure its correctness.

Fire in line advancing, is when the infantry marches in line to attack the enemy and in advancing makes use of its fire. On these occasions it is better to fire the two first ranks only standing, reserving the third, than to make the front rank kneel, (as was formerly the practice) and to fire the whole; but when it is necessary to fire a considerable distance, or on a retiring enemy, vollies may be given by the three ranks, the front one kneeling.

Firing by platoons is practised when a line is posted, or arrives at a fixed situation, in this position battalions fire independent of one another, and the fire generally commences from the centre of each. The first fire of each battalion must be regular, and at established pauses and intervals; after which each platoon may continue to fire as soon as it is loaded independent and as quick as possible. The use of this is to acquire the habit of obedience to command; for in close action platoon firing is both absurd and impracticable.

Firing by files, is generally used behind a parapet, hedge, or abbatis. In this situation the two first ranks only can fire, and that must be by the 2 men of the same file always firing together, with coolness and deliberation. When however, the parapet, hedge, or abbatis is but a little raised, platoon firing may be resorted to.

Oblique Firing by battalions, or otherwise, according to the ground, is extremely advantageous when it is found expedient to give an oblique direction to part of a line, or when it is discovered that their fire can in this manner be thrown against the opening of a defile, the flanks of a column, or against cavalry or infantry that direct their attack on some particular battalion or portion of the line. See Am. Mil. Lib.

Oblique firing, is either to the right and left, or from the right and left to the centre, depending entirely on the situation of the object to be fired against. The Prussians have a particular contrivance for this purpose: If they are to level to the right, the rear ranks of every platoon are to make two quick but small paces to the left, and the body of each soldier to quarter face or turn ¹⁄₈th of a circle; and are to take the same distance to the right if they are to level to the left.

When a line halts at its points of firing, no time is to be lost in scrupulous dressing, and the firing is instantly to commence. But when a line halts, and is not to fire, the usual dressings must be attended to; and every thing will depend upon the coolness and attention of the officers and non-commissioned officers.