|October 15||Organized at Atlanta, Georgia under the command of Colonel Edward Lloyd Thomas (formerly lieutenant colonel of the 4th Battalion Georgia Infantry), Lieutenant Colonel Gustavus A. Bull and Major Bolling Hall Holt.
Company A – Haralson Brown Guards (Haralson County), Captain William Jefferson Head
|October||Sent to Virginia and mustered into Confederate service in Richmond.|
|May 19||Captain Robert M. Rawlins of Company F died of disease at Richmond. Lieutenant James T. McElvaney was elected captain of Company F.|
|May 27||Assigned to General J. R. Anderson’s Brigade, A.P. Hill’s Division, Army of Northern Virginia|
|May 31-June 1||
Battle of Seven Pines
Lieutenant Colonel Bull was mortally wounded on May 31. Lieutenant Charles W. Avery was wounded and permanently disabled. Adjutant James H. Ware was wounded.
Major Holt was promoted to lieutenant colonel.
|June 13||Captain James M. White and 1st Lieutenant Samuel H. Dean of Company B resigned. Second Lieutenant Graves B. Almand was elected captain of Company B. Samuel Dean would die in Richmond on July 20.|
|June 15||Lieutenant Daniel Y. Wood died at Richmond.|
Battle of Mechanicsville
Captain David B. Henry and Lieutenant Hope H. Roberts of Company C were killed. Lieutenant Orlando S. Cochran was wounded but elected captain of Company C. Adjutant James H. Ware was killed.
|June 30||Colonel Thomas took command of the brigade as senior colonel after Brigadier General Anderson was wounded on June 30. General Anderson would resign from the army to run the Tredegar Iron Works in Richmond.|
|July||Assigned to General J. R. Anderson’s Brigade, A.P. Hill’s Division, Army of Northern Virginia|
|July 3||Captain William H. McCullohs of Company K was elected major. Captain William Jefferson Head of Company A resigned. John Duke was elected captain of Company A.|
Battle of Cedar Mountain
Captain James T. McElvaney of Company F was wounded.
Lieutenant John W. Milford of Company E was killed on August 30.
The brigade was left at Harpers Ferry to finish the work of paroling Federal prisoners and securing captured supplies while the rest of A.P. Hill’s Division made its legendary forced march to Sharpsburg that saved Lee’s army.
|October 12||Lieutenant Jesse W. Kimbrough was elected captain of Company K.|
|November 12||Captain Aaron K. Richardson of Company G resigned. Lieutenant Charles M Tuggle was elected captain.|
|November 18||Colonel Lloyd was promoted to brigadier general. Lieutenant Colonel Holt was promoted to colonel and Major McCullohs was promoted to lieutenant colonel.|
|December 30||Captain William L. Groves of company I was elected major.|
|January 22||Captain Evan Riley Whitley of Company E resigned due to disability. Lieutenant George W. Hammond was elected captain of Company E.|
|June 1||The regiment was assigned to Thomas’ Brigade of Pender’s Division in the newly-created Third Corps|
|June 10||Captains Orlando Cochran of Company C and George Hammond of Company E resigned due to disability. Lieutenant John E. Steed was elected captain of Company C.|
The regiment was commanded by Colonel Bolling H. Holt. It lost 11 men killed, 37 wounded and 42 missing of the approximately 300 men engaged. Lieutenant W.M. Rawlins of Company F was wounded. Captain Charles M Tuggle of Company G was captured on July 2 and would die of fever in prison. Lieutenant Thomas B. Jones of Company G was wounded and captured on July 2
From the monument to Thomas’ Brigade on the Gettysburg battlefield:
July 1. In reserve north of Chambersburg Pike on left of the Division. At sunset moved to position in McMillan’s Woods.
July 2. On duty in support of artillery. At 10 P. M. advancing took position in Long Lane with left flank in touch with McGowan’s Brigade and the right near the Bliss House and Barn.
July 3. Engaged most of the day in severe skirmishing and exposed to a heavy fire of artillery. After dark retired to this Ridge.
Battle of Williamsport
|August 13||Major General Cadmus Wilcox took over the division from Brigadier General Lane, who had been temporary commander since Gettysburg.|
|November-December||Mine Run Campaign|
|December 21||Major William L. Groves resigned to serve his elected term in the Georgia legislature. Captain Lee A.J. Williams of Company D was elected major. Lieutenant John M. Mitchell was elected captain of Company D.|
Captain John E. Steed of Company C was wounded and Lieutenant James J. Boss of Company G was captured on May 6.
Captain John Duke of Company A was wounded.
|May 19||Major Williams died on May 19. Captain James T. McElvaney of Company F was elected major.|
Battle of the North Anna
Captain John Y. Carter of Company G was killed at Jericho Ford.
Lieutenant Wyatt V. Liner of company A was mortally wounded on June 4.
|June 5||Captain Graves B. Almand of Company B died at Lynchburg. Lieutenant Nathan C. Carr was elected captain of Company B.|
|June 19||Petersburg Siege Begins|
Battle of Weldon Railroad
|August 3||Captain John M. Mitchell of Company D retired to the Invalid Corps.|
|September 13||Lieutenant Jerry R. Winchester died of typhoid fever at his home in Heard County, Georgia. Lieutenant James P. Johnston was elected captain of Company D.|
|February 28||Lieutenant Colonel McCullohs and Major McElvaney left for Georgia on sick furlough and did not return. Captains James P. Johnston of company D and Jesse W. Kimbrough of Company G were noted as Absent Without Leave.|
Captain Nathan C. Carr of Company B was wounded.
The regiment surrendered 15 officers and 121 men under the command of Colonel Holt.