|September||Organized at Lightwoodknot Springs near Columbia under Colonel William D. DeSaussure, Lieutenant Colonel Richard Anderson and Major Joseph F. Gist|
|Served on James Island|
|October 18||Lt. Colonel Anderson died of disease, and Major Gist was promoted to lieutenant colonel|
Battle of Port Royal Sound
Action at Fort Wagner, Hilton Head Island
|December 14||Captain William M. Gist of Company B promoted to major|
|July||Moved to Virginia and assigned to Drayton’s Brigade of D.R. Jones’ Division|
Second Battle of Manassas
The regiment lost 24 men
Battle of South Mountain
The regiment lost 110 men
|November 26||Transferred to Kershaw’s Brigade of McLaws’ Division|
Battle of Fredericksburg
The regiment lost 55 men out of 404 engaged
Battle of Salem Church (Chancellorsvile Campaign)
The regiment was under the command of Lt. Colonel J.F. Gist. It lost 54 casualties.
The regiment was commanded by Colonel DeSaussure and brought 448 men to the field. It lost 23 men killed, 96 wounded and 18 missing or captured in fighting around the Rose Farm. Colonel DeSaussure was killed, and Lieutenant Colonel Joseph Gist took command of the regiment..
From the marker to Kershaw’s Brigade on the Gettysburg battlefield:
The 15th Regiment fought on Rose Hill and in the ravine and forest beyond. Late in the evening the Brigade took part in the general advance by which the Union forces were forced from the Wheatfield and across Plum Run Valley. At dark under orders it retired to Peach Orchard.
After the battle Lieutenant Colonel Gist was promoted to colonel.
|September||Transferred west with Longstreet’s Corps|
The regiment fought at Snodgrass Hill. Lt. Colonel Joseph Gist was wounded and disabled. Major William Gist took over command.
|November 16||Campbell’s Station|
Siege of Knoxville
Attack on Fort Sanders
The regiment lost 3 men killed and 11 wounded. Major William M. Gist was killed at Fort Sanders. Captain Frederick S. Lewie was promoted to major.
|Dece,ber 15||Bean’s Station|
|January 5||Lieutenant Colonel Joseph F. Gist resigned due to his wound. Major Lewie was promoted to lieutenant colonel.|
|January 19||Captain John B. Davis of Company E appointed colonel|
|March||Returned to Virginia|
|May 23-25||North Anna|
Siege of Petersburg
Battle of Deep Bottom
Lt. Colonel Lewie wounded in the left side by shrapnel
|October 7||Port Republic|
|October||Returned to Richmond front|
|January||Transferred to North Carolina|
|Fenruary 18||One of the last units to evacuate Charleston|
|February 20||“Rode the cars” of the Northeastern Railroad to Florence on overloaded trains, with many of the men exposed on top of the cars in a heavy downpour.|
Battle of Averasborough
Battle of Bentonville
The regiment lost 1 man wounded
|April 26||Surrendered with the Army of Tennessee under Colonel John B. Davis. Assigned as army Provost, guarding food and munitions at the Greensboro railroad depot during the surrender.|
|May 3||Ceremonially turned the stores of the Army of Tennesse over to the 104th Ohio Infantry Regiment|