Composition of Infantry Units

RegimentBattalions (3)Companies
EachEachInfantry (12)Headquarters (1)Machine Gun (1)Supply (1)
1 Colonel
1 Lt. Colonel
3 Majors
15 Captains
16 1st Lieuts.
15 2nd Lieuts.
—
51
—
1 Hdqrs. Co.
1 Machine Gun Co.
1 Supply Co.
12 Infantry Cos., organized into 3 battalions of 4 companies each
Attached
1 Major, Med. Dept.
3 Capts., or 1st Lieuts., Med. Dept.
1 Chaplain		1 Major
1 1st Lieut., mounted (battalion adjutant)
4 Companies.
Attached
1 Battalion Sergt. Major (from Hdqrs. Co.)		1 Captain
1 1st Lieut.
1 2nd Lieut.
—
3
—
1 1st Sergt.
1 Mess Sergt.
1 Supply Sergt.
6 Sergts.
11 Corpls.
2 Cooks
2 Buglers
1 Mechanic
19 Pvts. (1st Class)
56 Pvts.
—
100
—
(The President may add 2 Sergts., 6 Corpls., 1 Mechanic, 9 Pvts. 1st Class and 31 Pvts.—total, 49)		1 Captain, mounted, (Regtl. Adjt.)
—
1 Regtl. Sergt. Major, mounted.
3 Batln. Sergts. Major, mounted.
1 1st Sergt. (drum major)
2 Color Sergts.
1 Mess Sergt.
1 Supply Sergt.
1 Stable Sergt.
1 Sergt.
2 Cooks
1 Horseshoer
1 Band leader
1 Asst. Band leader
1 Sergt. bugler
2 Band Sergts.
4 Band Corpls.
2 Musicians, 1st Class
4 Musicians, 2nd Class
13 Musicians, 3rd Class
4 Pvts., 1st Class, Mtd.
12 Pvts, Mtd.
—
58
—		1 Captain, Mtd.
1 1st Lt., Mtd.
2 2nd Lts., Mtd.
—
4
—
1 1st Sergt., Mtd.
1 Mess Sergt.
1 Supply Sergt., Mtd.
1 Stable Sergt., Mtd.
1 Horseshoer
5 Sergeants
6 Corporals
2 Cooks
2 Buglers
1 Mechanic
8 Pvts., 1st Class
24 Privates
—
53
—
(The President may add 2 Sergts., 2 Corpls., 1 Mechanic, 4 Pvts., 1st Class and 12 Pvts.—total, 21)		1 Captain, Mtd.
1 2nd Lt., Mtd.
—
2
—
3 Regtl. Supply Sergts., Mtd.
1 1st Sergt., Mtd.
1 Mess Sergt.
1 Stable Sergt.
1 Corpl., Mtd.
1 Cook
1 Saddler
1 Horseshoer
1 Wagoner for each authorized wagon of the field and combat train.

Transportation, orderlies, etc. To Hdqrs. Co., 27 riding horses; to Machine Gun Co., 6 riding horses and 8 pack mules; to Supply Co., 3 riding horses; to each Battalion Hdqrs., 6 riding horses, 1 wagon, 4 draft mules, and 2 mounted orderlies; to Regtl. Hdqrs., 5 riding horses.