|May||Individual companies were organized and accepted for service in Georgia and made their way to Richmond.|
|Individual companies were mustered into Confederate service for the duration of the war on different dates and at different locations:
Company A – “Sparks Guards” – Captain John B. Cumming, at Richmond on June 2
|July 14||Major William D. Smith, Acting Assistant Adjutant General to General Lawton, was elected colonel of the 20th Georgia.|
|August 30||Captain John A. Jones of Company I was promoted to major.|
|September 2||Lieutenant Van A. Leonard was elected captain of Company H.|
|September 3-4||Moved to Mason’s Hill, near Annandale, Fairfax County, Virginia|
|September 5||Captain John B. Cumming of Company A was elected lieutenant colonel.|
|September 14||Lieutenant Albert B. Ross was elected captain of Company A.|
|October 3||Captain Henry J. Smith of Company H resigned. Lieutenant John A. Coffee was elected captain of Company H.|
|October 7||The 20th Georgia was assigned to Early’s Brigade, Van Dorn’s Division, 1st Corps, Army of the Potomac.|
|December 31||Captain Jesse F. Cleveland of Company K resigned.|
|January 3||Captain Lucius C. Norwood of Company E resigned.|
|January 10||Lieutenant Ransom D. Little was elected captain of Company E and Lieutenant William Craig was elected captain of Company K.|
|January 16||Captain John B. Strother of Company B resigned. Lieutenant Henry C. Mitchell was elected captain of Company B.|
|March 7||Colonel William Smith was promoted to brigadier general. Lieutenant Colonel Cumming was promoted to colonel. Major John A. Jones was promoted to lieutenant colonel. Captain Roger L. Gamble of Company C was promoted to major and Lieutenant Willis F. Denny was elected captain of Company C.|
|April||The regiment was recorded as having 560 effectives.|
|May 23||Toombs’ Brigade became part of D.R. Jones’ Division|
|June 14||Major Roger L. Gamble resigned. Captain James D. Wadell of Company D was elected major. Lieutenant Sheppard W. Blance was elected captain of Company D.|
|June 25-July 1||
Seven Days Battles
Battle of Malvern Hill
Captain Van A. Leonard of Company I was mortally wounded.
|July 17||Lieutenant Charles B. Mims was elected captain of Company I.|
The 20th Georgia lost 152 casualties. Lieutenant Robert Jordan of Company C was killed.
|September 14||Ordered late in the evening to march to Sharpsburg.|
|September 15||Arrived at Sharpsburg and was placed on the bluff above what we become known as Burnside’s Bridge.|
|September 16||Engaged with Union skirmishers.|
The regiment was commanded by Colonel Cumming. It lost 4 men killed, 47 wounded and 17 missing, about a quarter of its effective strength of 250 men, defending the bluff behind what would become known as Burnside’s Bridge.
From the first of two War Department markers for Toombs’ Brigade that were on the Antietam battlefield, located on the Harpers Ferry Road just south of Sharpsburg:
Toombs’ Brigade took position on the evening of September 15, on the bluff commanding the Burnside Bridge and ford a short distance below. His skirmishers and several Batteries of Artillery engaged the enemy during the afternoon of the 16th. On the morning of the 17th the Brigade was exposed to a heavy fire from the enemy’s Artillery on the opposite side of the Antietam. Between 9 A.M. and noon the enemy made several attempts to carry the bridge, but failed. An assault at 1 P.M. was successful and the Brigade fell back and formed line in this road, on the extreme right of the Division and co-operated with Archer’s Brigade of A.P. Hill’s Division in checking any further advance of the enemy.
From the second of two War Department markers for Toombs’ Brigade that were on the Antietam battlefield, at one time on the west side of Branch Avenue but no longer standing:
On the morning of the 17th, the 2d and 20th Georgia of Toombs’ Brigade, the 50th Georgia of Drayton’s Brigade, and a Company each of Hood’s Texas Brigade and Jenkins’ Brigade occupied a position commanding the Burnside Bridge and Snavely’s Ford. At 1 P.M., the Ninth Army Corps forced the passage of the bridge and ford, and Toombs withdrew his command to the Antietam Furnace Road in the suburbs of Sharpsburg. During the engagement at the bridge and ford, and while falling back, Toombs was joined by the 15th and 17th Georgia, of his Brigade, and five Companies of the 11th Georgia of Col. George T. Anderson’s Brigade. Re-forming his command on the Antietam Furnace Road, where he was joined by portions of Kemper’s, Drayton’s and Garnett’s Brigades, Toombs advanced on the left of Archer’s Briagade of A.P. Hill’s Division and, at this point, engaged the Federal troops in the lane and fields beyond. Late in the afternoon his command was relieved by Branch’s Brigade of A.P. Hill’s Division and moved easterly across the Sharpsburg Road, where it remained until withdrawn to re-cross the Potomac.
From Colonel Cumming’s Official Report on the 20th Georgia in the battle:
On the 15th instant I was stationed at a post as picket guard, which post was the scene of action on the 17th, so far as my regiment was concerned. On the evening of the 16th instant, the enemy appearing in force, I sent out a body of skirmishers, who were driven back. Early the next morning the enemy showed in great force – at least three brigades, supported by artillery, among which were some mountain howitzers. They poured a heavy fire upon us, which continued almost uninterruptedly for nearly five hours. My regiment, about 200 strong, maintained its position, inflicting a heavy loss to the enemy, killing and wounding, according to statements of some members of my command who were taken prisoners, nearly 1,000. The fire of the enemy continued in undiminished force, and as all the ammunition available on the ground from the boxes of the dead and wounded men had been expended, and being enfiladed by a battery which the enemy had planted on our left, I deemed it proper to withdraw my command. This order was not given until the advancing enemy were within six or seven yards of my line. A portion of the regiment under my immediate command returned to the engagement during the afternoon and fought on the right of the Fifteenth and Seventeenth Georgia Regiments until after dark. When men acted as my command did, I cannot mention the names of any who particularly distinguished themselves, as every one did his whole duty. Accompanying this is my list of casualties, showing: Killed, 4; wounded, 47; missing, 17; total, 68.
|October||Toombs’ Brigade was transferred to Hood’s Division due to General Jones’ heart disease.|
|January 31||Captain John R. Ivey of Company G resigned. Lieutenant Wiley N. Hutchins was elected captain of Company G.|
|March 3||Colonel Toombs resigned. Colonel Benning took over the brigade|
|April 11-May 4||Suffolk Campaign|
|May 29||Colonel Cumming resigned due to medical reasons. Lieutenant Colonel John A. Jones was elected major. Major James Waddell was elected lieutenant colonel and Captain Eli M. Seago of Company F was elected major. Lieutenant William L. Abbott was elected captain of Company F.|
The regiment was commanded by Colonel John Augustus Jones and brought 525 men to the field. It lost 25 men killed, 84 men wounded, and 28 missing in fighting along the Wheatfield Road.
Colonel Jones was killed on July 2 and Lt. Colonel James D. Waddell took command. Lieutenant F. McCrimmon of Company H was also killed. Captains Albert B. Ross of Company A and Henrt C. Mitchell of Company B were wounded, as were Lieutenants P.G. Hatachett and Ellington J. Morgan of Company E.
From the War Department marker for Benning’s Brigade on the Gettysburg battlefield:
July 2. Arrived and formed line about 4 P. M. in rear of Law’s and Robertson’s Brigades and moving forward in support of these took prominent part in the severe conflict which resulted in the capture of Devil’s Den together with a number of prisoners and three guns of the 4th New York Battery.
July 3. Held Devil’s Den and the adjacent crest of rocky ridge until late in the evening when under orders the Brigade retired to position near here. Through mistake of orders the 15th Georgia did not retire directly but moved northward encountered a superior Union force and suffered considerable loss.
July 4. Occupied breastworks near here facing southward until midnight.
July 5. About 5 A. M. began the march to Hagerstown Md.
After the battle Lieutenant Colonel James Wadell was elected colonel. Major Eli M. Seago was elected lieutenant colonel, and Captain Albert B. Ross of Company A was elected major. Lieutenant Willis W. Breazeal was elected captain of Company A.
|July 13-14||Recrossed the Potomac on the return to Virginia.|
|September||Transferred with Longstreet and the rest of hood’s Division to the Western Theater.|
Battle of Chickamauga
Lieutenant Colonel Eli M. Seago was wounded. Captains Willis W. Breazeal of Company A and Wiley N. Hutchins of Company G were killed. Captain John A. Coffee of Company H and Lieutenant John S. Sligh of Company F were wounded.
Lieutenant Theophilus S. Fontine was elected captain of Company G.
Battle of Wauhatchie
|November 20 – December 4||
Siege of Knoxville
|December 5||Withdrew from Knoxville to the northeast.|
|December 6||To Rutledge.|
|December 9||To Rogersville.|
|February 12||Major General Charles W. Field was assigned to permanently take over the wounded Hood’s Division.|
|April 10||Lieutenant William C. Spence was elected captain of Company D.|
Brigadier General Benning was wounded in the shoulder on May 5 and Colonel Du Bose of the 15th Georgia took command of the brigade.
Lieutenant Colonel Eli M. Seago was wounded. Lieutenant Patrick N. Bostick of Company C was killed. Lieutenant Samuel B. Cleghorn of Company G was wounded, losing his leg.
Captain John A. Coffee of Company H was elected major although still absent due to his Chickamauga wound. It was later decided that the promotion was in error and he was retired to the Invalid Corps.
|May 8||Major Albert B. Ross resigned to become the Clerk of Court of Bibb County, Georgia. Captain William Craig of Company K was elected major.|
Lieutenant W.A. Alexander was killed on May 10.
Battle of Chaffin’s Farm (Fort Harrison)
Captains John B. Richards of Company F and Charles B. Mims of Company I and Lieutenant George F. Adams of Comany K were captured.
Battle of Darbytown Road
Captain William Spence of Company D was wounded.
|November 16||Lieutenant Colonel Eli M. Seago was elected colonel.|
|January 6||Captain Willis F. Denny of Company C was furloughed for disability. He did not return to the regiment.|
The 20th Georgia surrendered 18 officers and 191 men.