List of United States Regular Army Civil War units

The following is a list of the units of the United States Regular Army during the American Civil War.

Infantry

 * 1st Infantry Regiment
 * 2nd Infantry Regiment
 * 3rd Infantry Regiment
 * 4th Infantry Regiment
 * 5th Infantry Regiment
 * 6th Infantry Regiment
 * 7th Infantry Regiment
 * 8th Infantry Regiment
 * 9th Infantry Regiment
 * 10th Infantry Regiment
 * 11th Infantry Regiment
 * 12th Infantry Regiment
 * 13th Infantry Regiment
 * 14th Infantry Regiment
 * 15th Infantry Regiment
 * 16th Infantry Regiment
 * 17th Infantry Regiment
 * 18th Infantry Regiment
 * 19th Infantry Regiment

Cavalry

 * 1st Cavalry Regiment
 * 2nd Cavalry Regiment
 * 3rd Cavalry Regiment
 * 4th Cavalry Regiment
 * 5th Cavalry Regiment
 * 6th Cavalry Regiment

Artillery

 * 1st Artillery Regiment
 * Battery A
 * Battery B
 * Battery C
 * Battery D
 * Battery E
 * Battery F
 * Battery G
 * Battery H
 * Battery I
 * Battery K
 * Battery M
 * 2d Artillery Regiment
 * Battery A
 * Battery E
 * Battery G
 * 3d Artillery Regiment
 * 4th Artillery Regiment
 * Battery A
 * Battery B
 * Battery C
 * Battery E
 * Battery G
 * Battery H
 * Battery I
 * Battery K
 * Battery M
 * 5th Artillery Regiment
 * Battery A
 * Battery C
 * Battery D
 * Battery H
 * Battery I
 * Battery K