I rather doubt you will find that detail, however, here are a number of documents held by the Army Military History Institute at Carlisle Barracks, Pa. that may help.
U.S. Army Military History Institute Collections Division
950 Soldiers Drive
Carlisle Barracks, PA 17013-5021 29 Aug 08
11th Mississippi Infantry Regiment
Brown, Maud M. The University Grays: Company A Eleventh Mississippi Regiment, Army of Northern Virginia, l86l-l865. Richmond, VA: Garrett & Massie, l940. 80 p. E568.5.11thB8.
Crute, Joseph H., Jr. Units of the Confederate States Army. Midlothian, VA: Derwent Books, 1987. E546C78.
See p. 173 (1 photocopied page) for a concise summary of the regiment's service.
Davis, Steven R. "'...Like Leaves in an Autumn Wind': The 11th Mississippi Infantry in the Army of Northern Virginia." CW Regiments Vol. 2, No 4: pp. 269-312 (23 photocopied pages). Per.
_____. "Ole Miss' Spirited University Greys Left Their Quiet University Campus for the War's Worst Battlefields." America's CW (Mar 1992): pp. 10, 12 & 70-72 (5 photocopied pages). Per.
Love, William A. "Mississippi at Gettysburg." Publications of the Mississippi Historical Society, In Gettysburg Sources, Vol. 1. Baltimore: Butternut & Blue, 1986. pp. 122-149 (14 photocopied pages). E475.53G47.1986v1.
Peel, William H. Far From Home: The Diary of Lt. William H. Peel, 1863-1865. [Trans by Ellen S. Wilds] Carrollton, MS: Pioneer Pub, 2005. 392 p. E605P44.
Sifakis, Stewart. Compendium of the Confederate Armies: Mississippi. NY: Facts on File, 1995. pp. 90-92 (2 photocopied pages). E568S53
Stubbs, Steven J. Duty-Honor-Valor: The Story of the Eleventh Mississippi Infantry Regiment. Philadelphia, MS: Dancing Rabbit , 2000. 984 p E568.5.11thS78.
Williams, T.P. The Mississippi Brigade of Brig. Gen. Joseph R. Davis: A Geographical Account of Its Campaigns and a Biographical Account of Its Personalities, 1861-1865. Dayton, OH: Morningside, 1999. 291 p. E568.4D3W55.
Winschel, Terrence J. "The Gettysburg Diary of Lieutenant William Peel." Gettysburg Magazine No. 9 (Jul 1993): pp. 98-107 (9 photocopied pages). E475.53G482no9.
11th Mississippi Infantry Regiment (p.2)
The following pertinent personal papers are in the Institute's Manuscript Archive:
Howell, F. A. (Memoir) - BrakeColl McFarland,
Baxter - BrakeColl Owen, Lucien S.J. - CWTIColl
Reed, W.D. - BrakeColl