It must be generally remarked, that the rear ranks which were closed up before the march began, are to move at the lock step, and not be allowed to open during the march. The correct movement of the battalion depends much on their close order.

In the march in line, arms are always to be carried shouldered. Supported arms are only allowed when the battalion is halted, or advanced in column; but if this indulgence were allowed in line, when the most perfect precision is required, the distance of files would not be preserved, and slovenliness, inaccuracy, and disorder, must inevitably take place.

To change direction on the centre in March, is to correct any floating of the line, occasioned by the opening or closing of the flanks, by ordering a section or central platoon to quarter wheel to right or left. At this command the guiding Serjeant making an almost imperceptible change of his position, and of his points, and the colors in the battalion, when they have advanced 6 paces to his ground, conforming to it, the whole will, by degrees, gain a new direction. Every change of direction made in this manner, must produce a kind of wheel of the battalion, on its centre, one wing gradually giving back, and the other as gradually advancing, an attention which the commander must be careful to see observed.

When the battalion which has marched in perfect order, arrives on its ground, it keeps the marked time until it is dressed, and receives the word halt, the step which is then taking is finished, and the whole halt. Eyes are cast to the centre, and the commanding officer places himself close to the rear rank, in order to see whether the battalion be sufficiently dressed, and in a direction perfectly parallel to the one it quitted.

When the battalion is advancing in line for any considerable distance, or moving up in parade, the music may be allowed at intervals, to play for a few seconds only, and the drums in two divisions to roll, but the wind instruments are alone permitted to play. When the line is retiring, the music are never to play.

To march by any one face, the square or oblong having previously been formed by the 4th, 5th, and 6th, companies of a regular battalion standing fast. Under these circumstances, the side which is to lead is announced; the colors move up behind its centre; the opposite side faces about: and the two flank-sides wheel up by sub-divisions, so as to stand each in open column, The square marches, two sides in line, and by their centre; and two sides in open column, which cover, and dress to their inward flanks on which they wheeled up carefully preserving their distances. The square halts, and when ordered to front square, the sub-divisions in column immediately wheel back, and form their sides, and the side which faced about again faces outwards.

To March by the right front angle. When the perfect square is to march by one of its angles, in the direction of its diagonal, a caution is given by which angle the movement is to be made, and the two sides that form it stand fast, while the other two sides face about. The whole then by sub-divisions, wheel up one-eighth of a circle, two sides to the right, and two sides to the left, and are thus parallel to each other, and perpendicular to the direction in which they are to move, the pivot-flanks being in this manner placed on the sides of the square, each side being thus in echellon, and the colors behind the leading angle, the whole are out in march, carefully preserving the distances they wheeled at, and from the flanks to which they wheeled.

When the oblong marches by one of its angles, its sub-divisions perform the same operation of wheeling up, each the eighth of the circle; but its direction of march will not be in the diagonal of the oblong, but in that of a square, viz. of the line which equally bisects the right angle.

It will be remembered, that the angular march of the square or oblong, may be made in any other direction, to the right or left of the above one; but in such case the sub-divisions of the two opposite sides, will have to wheel up more than the eighth of the circle, in order to stand as before, perpendicular to the new direction. The sum of these two wheels will always amount to that of a quarter circle, and their difference will vary as the new line departs, more or less, from the equal bisecting line; this will be known by the first wheeling up the two angular divisions, till they stand perpendicular with the new direction, and then ordering all the others to conform accordingly. This movement is very beautiful in the execution, but cannot be made with any degree of accuracy, unless the perpendicular situation of the division is correctly attained, and carefully preserved.

To March in open ground, so as to be prepared against the attack of cavalry. In order to execute this movement, with some degree of security, one or more battalions may move in column of companies at quarter distances, one named company in the centre of each being ordered to keep an additional distance of 2 files; in which shape a battalion is easily managed, or directed upon any point. When the column halts, and is ordered to form the square, the first company falls back to the second, the last company closes up to the one before it: the whole companies make an interval of 2 paces in their centre, by their sub-divisions taking each one pace to the flanks; 2 officers with their serjeants, place themselves in each of their front and rear intervals; two officers with their serjeants, also take post in rear of each flank of the company, from which the additional interval has been kept; and a Serjeant takes the place of each flank front rank man of the first division, and of each flank rear rank man of the last division; all other officers, serjeants, the 4 displaced men, &c. assemble in the centre of the companies, which are to form the flank faces. Those last named companies having been told off, each in 4 sections, wheel up by sections, 2 to the right, and 2 to the left; (the 2 rear companies at the same time closing up, and facing outwards,) the inner sections then close forward to their front ones, which dress up with the extremities of the front and rear companies, and 4 on each flank of the second companies, from the front and from the rear; Face outwards!—The whole thus stand faced outwards and formed 6 deep, with two officers and their serjeants in the middle of each face, to command it; all the other officers, as well as serjeants, &c. are in the void space in the centre, and the files of the officers in the faces, may be completed from serjeants, &c. in the interior, in such manner as the commandant may direct. The mounted field officers, must pass into the centre of the column, by the rear face, if necessary, opening from its centre 2 paces and again closing in.