ARTICLE I. – To advance in line of battle.

648. The battalion being correctly aligned, and supposed to be the directing one, when the colonel shall wish to march in line of battle, he will give the lieutenant-colonel an intimation of his purpose, place himself about forty paces in rear of the color-file, and face to the front.

649. The lieutenant-colonel will place himself a like distance in front of the same file, and face to the colonel, who will establish him as correctly as possible, by signal of the sword, perpendicularly to the line of battle opposite to the color-bearer.  The colonel will next, above the heads of the lieutenant-colonel and color-bearer, take a point of direction in the field beyond, if a distinct one present itself, exactly in the prolongation of those first two points.

650. The colonel will then move twenty paces farther to the rear, and establish two markers on the prolongation of the straight line passing through the color-bearer and the lieutenant-colonel; these markers will face to the rear, the first placed about twenty-five paces behind the rear rank of the battalion, and the second at the same distance from the first.

651. The color-bearer will be instructed to take, the moment the lien tenant-colonel shall be established on the perpendicular, two points on the ground in the straight line which, drawn from himself, would pass between the heels of that officer; the first of these points will be taken at fifteen or twenty paces from the color-bearer.

652. These dispositions being made, the colonel will command:

1. Battalion, forward.

653. At this, the front rank of the color-guard will advance six paces to the front; the corporals in the rear rank will place themselves in the front rank, and these will be replaced by those in the rank of file closers; at the same time the two general guides will move in advance, abreast with the color-bearer, the one on the right, opposite to the captain of the right company, the other opposite to the sergeant who closes the left of the battalion.

0-654. At this the captain and covering sergeant of each of the companies of skirmishers will place themselves as prescribed No. 482, and each captain will command: Such company of skirmishers, forward.

655. The captains of the left wing will shift, passing before the front rank, to the left of their respective companies; the sergeant on the left of the battalion will step back into the rear rank.  The covering sergeant of the company next on the left of the color-company, will step into the front rank.

656. The lieutenant-colonel having assured the color-bearer on the line between himself and the corporal of the color-file, now in the front rank, will go to the position which will be hereinafter indicated, No. 665.

657. The senior major will place himself six or eight paces on either flank of the color-rank. The junior major will hold himself in the position prescribed No. 35, Title I.

658. The colonel will then command:

2. MARCH (or double quick—MARCH).

659. At this command, the battalion will step off with life; the color-bearer, charged with the step and direction, will scrupulously observe the length and cadence of the pace, marching on the prolongation of the two points previously taken, and successively taking others in advance by the means indicated in the school of the company; the corporal on his right, and the one on his left, will march in the same step, taking care not to turn the head or shoulders, the color-bearer supporting the color-lance against the hip.

0-660. At the same. command, briskly repeated by their chiefs, the companies of skirmishers will slip off, taking the guides as indicated No. 482.

661. The two general guides will march in the same step with the color-rank, each maintaining himself abreast, or nearly so, with that rank, and neither occupying himself with the movement of the other.

662. The three corporals of the color-guard, now in the front rank of the battalion, will march well aligned, elbow to elbow, heads direct to the front, and without deranging the line of their shoulders; the centre one will follow exactly in the trace of the color-bearer, and maintain the same step, without lengthening or shortening it, except on an intimation from the colonel or lieutenant-colonel, although he should find himself more or less than six paces from the color-rank.

663. The covering sergeant in the front rank between the color-company and the next on the left, will march elbow to elbow, and on the same line, with the three corporals in the centre, his head well to the front.

664. The captains of the color-company, and the company next to the left, will constitute, with the three corporals in the centre of the front rank, the basis of alignment for both wings of the battalion; they will march in the same step with the color-bearer, and exert themselves to maintain their shoulders exactly in the square with the direction.  To this end, they will keep their heads direct to the front, only occasionally casting an eye on the three centre corporals, with the slightest possible turn of the neck, and if they perceive themselves in advance, or in rear of these corporals, the captain, or two captains, will almost insensibly shorten or lengthen the step, so as, at the end of several paces, to regain the true alignment, without giving sudden checks or impulsions to the wings beyond them respectively.

665. The lieutenant-colonel, placed twelve or fifteen paces on the right of the captain of the color-company, will maintain this captain and the next one beyond, abreast with the three centre corporals; to this end, he will caution either to lengthen or to shorten the step, as may be necessary, which the captain, or two captains, will execute as has just been explained.

666. All the other captains will maintain themselves on the prolongation of this basis; and, to this end, they will cast their eyes toward the centre, taking care to turn the neck but slightly, and not to derange the direction of their shoulders.

667. The captains will observe the march of their companies, and prevent the men from getting in advance of the line of captains; they will not lengthen or shorten step except when evidently necessary; because, to correct, with too scrupulous attention, small faults, is apt to cause the production of greater – loss of calmness, silence, and equality of step, each of which it is so important to maintain.

668. The men will constantly keep their heads well directed to the front, feel lightly the elbow toward the centre, resist pressure coming from the flank, give the greatest attention to the squareness of the shoulders, and hold themselves always very slightly behind the line of the captains, in order never to shut out from the view of the latter the basis of alignment; they will, from time to time, cast an eye on the color-rank, or on the general guide of the wing, in order to march constantly in the same step with those advanced persons.

669. Pending the march, the line, determined by two markers, will be prolonged, by placing in proportion as the battalion advances, a third marker in the rear of the first, then the second marker will quit his place and go a like distance in rear of the third; the first marker will, in his turn, do the like in respect to the second, and so on, in succession, as long as the battalion continues to advance; each marker, on shifting position, taking care to face to the rear, and to cover accurately the two markers already established on the direction.  A. staff officer, or the quartermaster-sergeant, designated for the purpose, and who will hold himself constantly fifteen or twenty paces facing the marker farthest from the battalion, will caution each marker when to shift place, and assure him on the direction behind the other two.

670. The colonel will habitually hold himself about thirty paces in rear of the centre of his battalion, taking care not to put himself on the line of markers; if, for example, by the slanting of the battalion, or, the indications which will be given, Nos. 680 and following, he finds that the march of the color-bearer is not perpendicular, he will promptly command:

Point of directions to the right (or left).

671. At this command, the senior major will hasten thirty or forty paces in advance of the color-rank, halt, face to the colonel, and place himself on the direction which the latter will indicate by signal of the sword; the corporal in the centre of the battalion will then direct himself upon the senior major, on a caution from the colonel, advancing, to that end, the opposite shoulder; the corporals on his right and left will conform themselves to his direction.

672. The color-bearer will also direct himself upon the senior major, advancing the opposite shoulder, the senior major causing him, at the same time, to incline to the right or left, until he shall exactly cover the corporal of his file; the color-bearer will then take points on the ground in this new direction.

673. The two general guides will conform themselves to the new direction of the color-rank.

674. The officer charged with observing the successive replacing of the markers in the rear of the centre, will establish them promptly on the new direction, taking for a basis the color-bearer and the corporal of his file in the centre of the battalion; the colonel will verity the new direction of the markers.

675. The lieutenant-colonel, from the position given No. 665, will see that the two centre companies, and successively all the others, conform themselves to the new direction of the centre, but without precipitancy or disorder; he will then endeavor to maintain that basis of alignment for the battalion, perpendicularly to the direction pursued by the color-bearer.

676. He will often observe the march of the two wings; and, if he discover that the captains neglect to conform themselves to the basis of alignment, he will recall their attention by the command – Captain of (suchcompany, or captains of (suchcompanies, on the line – without however, endeavoring too scrupulously to correct small faults.

677. The senior major on the flank of the color-rank will, during the march, place himself, from time to time, twenty paces in front of that rank, face to the rear, and place himself correctly on the prolongation of the markers established behind the centre, in order to verify the exact march of the color-bearer on that line; he will rectify, if necessary, the direction of the color-bearer, who will immediately take two new points on the ground between himself and the major.

678. All the principles applicable to the advance in line, are the same for a subordinate as for the directing battalion; but when the battalion under instruction is supposed to be subordinate, no markers will be placed behind its centre.

REMARKS ON THE ADVANCE IN LINE OF BATTLE.

679. If, in the exercises of detail, or courses of elementary instruction, the officers, sergeants, corporals, and men, have not been well confirmed in the principles of the position under arms, as well as in the length and cadence of the step, the march of the battalion in line will be floating, unsteady, and disunited.

680. If the color-bearer, instead of marching perpendicularly forward, pursue an oblique direction, the battalion will slant; crow dings in one wing, and openings in the other, will follow, and these defects in the march, becoming more and more embarrassing in proportion to the deviation from the perpendicular, will commence near the centre.

681. It is then of the greatest importance that the color-bearer should direct himself perpendicularly forward, and that the basis of alignment should always be perpendicular to the line pursued by him.

682. If openings be formed, if the files crowd each other, if, in short, disorder ensue, the remedy ought to be applied as promptly as possible, but calmly, with few words, and as little noise as practicable.

683. The object of the general guides, in the march in line of battle is to indicate to the companies near the flanks the step of the centre of the battalion, and to afford more facility in establishing the wings on the direction of the centre if they should be too much in the rear; hence the necessity that these guides should maintain the same step, and march abreast, or very nearly so, with the color-rank, which it will be easy for them to do by casting from time to time an eye on that rank.

684. If the battalion happen to lose the step, the colonel will recall its attention by the command, To the—STEP; captains and their companies will immediately cast an eye on the color-rank, or one of the general guides, and promptly conform themselves to the step.

685. Finally, it is of the utmost importance to the attainment of regularity in the march in line of battle, to habituate the battalion to execute with as much order as promptness the movements prescribed No. 670 and following, for rectifying the direction; it is not less essential that commanders of battalions should exercise themselves, with the greatest care, in forming their own coup d’æil, in order to be able to judge with precision the direction to be given to their battalions.