My Great Grandfather and three of his brothers were in the 6th. Here is a brief description of the unit, I am still trying to locate more information on the units engagements during the war and a complete roster.

6th Cavalry Regiment was formed in the spring of 1863 by consolidating the cavalry battalion of Smith's Georgia Legion and four independent cavalry companies. During the conflict it served in Davidson's, J.J. Morrison's, C.C. Crews', and Iverson's Brigade. The unit was active at Chickamauga and Philadelphia, participated in the Knoxville and Atlanta Campaigns, then took part in the defense of Savannah and the campain of the Carolinas. During April, 1865, it surrendered with the Army of Tennessee. Its commanding officers were Colonel John R. Hart, Lieutenant Colonels B. F. Brown and Joel C. Fain, and Majors Alfred F. Bale and John T. Burns.
(from: Units of the Confederate States Army; Joseph H. Crute, Jr.)

Since the unit started out as part of Smith's Legion and later changed to the 6th Cavalry it makes it a bit harder to track things down. I have found a complete list of the 65th Georgia Infantry Regiment, which also started out in Smith's Legion. Whether or not the units remained together for the remainder of the war is still a mystery to me.

Family members in the unit:

Martin V Prince
Larkin L. Prine (died at Cumberland Gap Nov 14, 1862)
Alvin W Prince
Archibald Prince