I am seeking information on any of the below mentioned Artillery Units. They were at Chickamauga and after.

Here is a listing of Georgia Artillery units attached to the Army of Tennessee:

General BRAXTON BRAGG, commanding,
RIGHT WING.
Lieut. Gen. LEONIDAS POLK.
Artillery.
Maj. MELANCTHON SMITH.
Scogin's (Georgia) Battery, Capt. John Scogin.

RESERVE CORPS.
Maj. Gen. WILLIAM H. T. WALKER.
WALKER'S DIVISION.
Brig. Gen. STATES R. GIST.
Artillery.
Howell's (Georgia) Battery (formerly Martin's), Capt. Evan P. Howell.

BUCKNER'S CORPS.
Maj. Gen. SIMON B. BUCKNER.
STEWART'S DIVISION.
Maj. Gen. ALEXANDER P. STEWART.
Artillery.
Maj. J. WESLEY ELDRIDGE.
T. H. Dawson's (Georgia) Battery., Lieut. R. W. Anderson.
Company E, 9th Georgia Artillery Battalion (Billington W. York's Battery), Lieut. William S. Everett.

LONGSTREET'S CORPS.
Maj. Gen. JOHN B. HOOD.
M'LAWS' DIVISION.
Brig. Gen. JOSEPH B. KERSHAW.
Maj. Gen. LAFAYETTE McLAWS.
HOOD'S DIVISION.
Maj. Gen. JOHN B. HOOD.
Brig. Gen. E. McIVER LAW..
RESERVE ARTILLERY.
Maj. FELIX H. ROBERTSON.
Havis' (Georgia) Battery, Capt. M. W. Havis.
Massenburg's (Georgia) Battery, Capt. T. L. Massenburg.