General Humphrey Marshall wrote to Adjutant and Inspector General Samuel
Cooper on December 14, 1862, from Abingdon, Virginia.

I forward the muster in Rolls of Captain M. V. Kilbourne's Co. H, Capt.
Sparel Ratcliff's Co. F, Capt. Geo. N. Tyler's Co. K, Capt. Wm. F. Webb's Co.
C,
Capt. Harvey Gray's Co. E, Capt. Wm. W. Wynn's Co. G, Capt. Joshua E. Hobbs
Co. A, Wm. R. Boles Co. B, Capt. Lexington M. Day's Co. D. Five of the first
lettered of these companies formerly composed the 21st Battalion Va. Vols.
commanded by Lt. Col. Slemp. By Order of Sec. of War I consolidated this
battalion with a battalion
organized in Lee & Scott Counties by Mr. Saml. Salyers. Thereby forming a full
Regiment, all Muster Rolls of which are herewith transmitted except one muster
roll which was sent back to the Regiment for the Captain's signature. This
Regiment
will now have to be numbered as a new Virginia Regiment laying aside its
battalion
number (21). The muster rolls of the old Battalion's companies have of course
been
returned heretofore but I thought it would be preferred that all should be
forwarded
at the time the regimental organization was completed. The Commissioned are
asked for:

Campbell Slemp as Colonel, A. L. Pridemore as Lieut. Colonel, Jas. B. Richmond
as Major, Geo. R. Johnson as Adjutant, H. C. Slemp is already Asst. Qr.
Master, John Riddle as Commissary, C. C. Johnston as Surgeon (now Assistant),
Wm. W. Morgrave as Assistant Surgeon

I Have the Honor to Be
Your Obt Servant
Humphrey Marshall
Brig. Gen.
P.A.C.S.

The regiment was officially designated the 64th Virginia Infantry on January
7, 1863.

Field and Staff Officers were:
Campbell Slemp, Colonel
Auburn L. Pridemore, Lieutenant Colonel/Colonel
James B. Richmond, Major/Lieutenant Colonel
Harvey E. Gray, Captain/Major