Following is from Hardee's. - See web site below
TITLE FIRST-RIFLE AND LIGHT INFANTRY TACTICS.
ARTICLE FIRST. - Formation of a Regiment in order of battle, or in line.
1. A regiment is composed of ten companies, which will habitually be posted from right to left, in the following order: first, sixth, fourth, ninth, third, eighth, fifth, tenth, seventh, second, according to the rank of captains.
2. With a less number of companies the same principle will be observed, viz.: the first captain will command the right company, the second captain the left company, the third captain the right center company, and so on.
3. The companies thus posted will be designated from right to left, first company, second company, &c. This designation will be observed in the manúuvres.
4. The first two companies on the right, whatever their denomination, will form the first division; the next two companies the second division; and so on, to the left.
5. Each company will be divided into two equal parts, which will, be designated as the first and second platoon, counting from the right - and each platoon, in like manner, will be subdivided into two sections.
6. In till exercises and manúuvres, every regiment, or part of a regiment, composed of two or more companies, will be designated its it battalion.
7. The color, with a guard to be hereinafter designated, will be posted on the left of the right center- battalion company. That company, and all on its right, will be denominated the right wing of the battalion; the remaining companies the left wing.
8. The formation of a regiment is in two ranks; and each company will be formed into two ranks, in the following manner: the corporals will be posted in the front rank, and on the right and left of platoons, according to height; the tallest corporal and the tallest mail will form the first file, the next two tallest men will form the second file, and so on to the last file, which will be company of the shortest corporal and the shortest man.
9. The odd and even files, numbered as one, two, in the company, from right, to left, will form groups of four men, who will be designated comrades in battle.
10. The distance from one rank to another will be thirteen inches, measured from the breasts of the rear rank men to the backs or knapsacks of the front rank men.
11. For manúuvring, the companies of a battalion will always be equalized, by transferring men from the strongest to the weakest companies.
POST OF COMPANY OFFICERS, SERGEANTS AND CORPORALS.
12. The company officers and sergeants are nine in number, and will be posted in the following manner:
13. The captain on the right of the company touching with the left elbow.
14. The first sergeant in the rear rank, touching 'with the left elbow and covering the captain. In the manúuvres he will be denominated covering sergeant, or right guide of the company.
15. The remaining officers and sergeants will be posted as file closers, and two paces behind the rear rank.
16. The first lieutenant, opposite the center of the fourth section.
17. The second lieutenant, opposite the center of the first platoon.
18. The third lieutenant, opposite the center of the second platoon.
19. The second sergeant, opposite the, second file from the left of the company. In the manúuvres he will be designated left guide of the company.
20. The third sergeant, opposite the second file from the right of the second platoon.
21. The fourth sergeant, opposite the second file from the left of the first platoon.
22. The fifth sergeant, opposite the second file from the right of the first platoon.
23. In the left or tenth company of the battalion, the second sergeant will be posted in the front rank and on the left of the battalion.
24. The corporals will be posted in the front rank, as prescribed No. 8.
25. Absent officers and sergeants will be replaced - officers by sergeants, and sergeants by corporals. The colonel may detach a first lieutenant from one company to command another, of which both the captain and first lieutenant are absent; but this authority will give no right to a lieutenant to demand to be 4o detached.
POSTS OF FIELD OFFICERS AND REGIMENTAL STAFF.
26. The field officers, colonel, lieutenant colonel and major are supposed to be mounted, and on active service shall be on horseback. The adjutant, when the battalion is manúuvring, will be on foot.
27. The colonel will take post thirty paces in rear of the file closers, and opposite the center of the battalion. This distance will be reduced whenever there is a reduction in the front of the battalion.
28. The lieutenant colonel and the major will be opposite the centers of the right and left wings respectively, and twelve paces in rear of the file closers.
29. The adjutant and sergeant major will be opposite the right and left of the battalion, respectively, and eight paces in rear of the file closers.
30. The adjutant and sergeant major will aid the lieutenant colonel end major, respectively, in the manúuvres.
31. The colonel, if absent, will be replaced by the lieutenant colonel, and the latter by the major. If all the field officers be absent, the senior captain will command the battalion; but if either be present, he will not call the senior captain to act as field officer, except in care of evident necessity.
32. The quarter-master, surgeon, and other staff officers, in one rank, on the left of the colonel, and three paces in his rear.
33. The quarter-master sergeant, on a line with the front rank of the field music, and two paces on the right.
POSTS OF FIELD MUSIC, AND BAND.
34. The buglers will be drawn up in four ranks, and posted twelve paces in rear of the file closers, the left opposite the center of the left center company. The senior principal musician will be two paces in front of the field music, and the other two paces in the rear.
35. The regimental hand, if there be one, will be drawn up in two or four ranks, according to its numbers, and posted five paces in rear of the field music, having one of the principal musicians at its head.
36. In each battalion the color-guard will be composed of eight corporals, and posted on the left of the right center company, of which company, for the time being, the guard will make a part.
37. The front rank will be composed of a sergeant, to be selected by the colonel, who will be called, for the time, color-bearer, with the two ranking corporals, respectively, on his right and left; the rear rank will be composed of the three corporals next in rank; and the three remaining corporals will be posted in their rear, and on the line of file closers. The left guide of the color-company, when these three last named corporals are in the rank of file closers, will be immediately on their left.
38. In battalions with less than five companies present, there will be no color-guard, and no display of colors, except it may be at reviews.
39. The corporals for the color-guard will be selected from those most distinguished for regularity and precision, as well in their positions under arms as in their marching. The latter advantage, and a just carriage of the person, are to be more particularly sought for in the selection of the color-bearer.
40. There will be two general guides in each battalion, selected, for the time, by the colonel, from among the sergeants (other than first sergeants) the most distinguished for carriage under arms, and accuracy in marching.
41. These sergeants will be -respectively denominated, in the manúuvres, right general guide, and left general guide, and be posted in the line of file closers; the first in rear of the right, and the second in rear of the left flank of the battalion.