I have found an enlisted man's letters dating from Aug. 21, 1861, they may very well detail the regiments travels and life in camp.
See the excerpt of what the U. S. Army Military History Institute holds in their unit bibliography below.
I am not aware of their search and reproduction costs. A visit there is well worth the while. Close to Gettysburg, Washington, DC, etc.
U.S. Army Military History Institute
Historical Services Division
950 Soldiers Drive
Carlisle Barracks, PA 17013-5021
31 Aug 06
13th Alabama Infantry Regiment
Brewer, Willis. Brief Historical Sketches of Military Organizations Raised in Alabama During the Civil War. Montgomery, AL:
AL CW Centennial Comm, 1962. pp. 610 12 (2 photocopied pages). E551.4B74. (Brief history and roster of officers).
The following pertinent personal papers are in the Institute's Manuscript Archive:
Adams, Homer CWMiscColl (Enlisted man's letters, Aug 21, 1861-Apr 7, 1863)
Boland, E.J. BrakeColl (Pvt's memoir of Gettysburg, 1906)
Moon, W.K. BrakeColl (Dr's description of capture & Ft Delaware Prison)
............
O.R.-- SERIES I--VOLUME XI/2 [S# 13]
PENINSULAR CAMPAIGN--SEVEN DAYS' BATTLES
No. 202. -- Report of Surg. Lafayette Guild, Medical Director Army of Northern Virginia, with Return of Casualties.
Command. Killed. Wounded. Total
M'LAW'S DIVISION.
Semme's brigade
13th Alabama 14 70 84
List of Casualties in the Army of Northern Virginia in the fights before Richmond, commencing June 26, 1862, and ending July 1, 1862— Continued.
Command. Killed. Wounded. Total
13th Alabama June 27, 1862 4 40 .... 44
July 1, 1862 10 47 .... 47