The 123rd Regiment Indiana Infantry was an infantry regiment that served in the Union Army during the American Civil War.
The 123rd Indiana Infantry was organized at Greensburg, Terre Haute, and Indianapolis, Indiana beginning December 25, 1863 and mustered in under the command of Colonel John Craven McQuiston.
The regiment was attached to 2nd Brigade, 1st Division, XXIII Corps, Army of the Ohio, to June 1864. 4th Brigade, 3rd Division, XXIII Corps, to August 1864. 3rd Brigade, 2nd Division, XXIII Corps, to December 1864. 2nd Brigade, 1st Division, XXIII Corps, Army of the Ohio, to February 1865, and Department of North Carolina to August 1865.
The 123rd Indiana Infantry mustered out of service August 25, 1865.
Left Indiana for Nashville, Tennessee, March 18, 1864. Marched to Charleston, Tennessee, April 7âÂÂ24, 1864. Atlanta Campaign May 1 to September 8. Demonstrations on Dalton, Georgia, May 8âÂÂ13. Rocky Faced Ridge May 8âÂÂ11. Battle of Resaca May 14âÂÂ15. Movements on Dallas May 18âÂÂ25. Operations on Pumpkin Vine Creek and battles about Dallas, New Hope Church, and Allatoona Hills May 25-June 5. Operations about Marietta and against Kennesaw Mountain June 10-July 2. Lost Mountain June 15âÂÂ17. Muddy Creek June 17. Noyes Creek June 19. Assault on Kennesaw June 27. Nickajack Creek July 2âÂÂ5. Ruff's Mills July 3âÂÂ4. Chattahoochie River July 5âÂÂ17. Siege of Atlanta July 22-August 25. Utoy Creek August 5âÂÂ7. Flank movement on Jonesboro August 25âÂÂ30. Lovejoy's Station September 2âÂÂ6. Operations against Hood in northern Georgia and northern Alabama September 29-November 3. Nashville Campaign NovemberâÂÂDecember. In front of Columbia November 24âÂÂ27. Battle of Franklin November 30. Battle of Nashville December 15âÂÂ16. Pursuit of Hood to the Tennessee River December 17âÂÂ28. At Clifton, Tennessee, until January 15, 1865. Movement to Washington, D.C.; then to Morehead City, North Carolina, January 15-February 24. Carolinas Campaign March 1-April 26. Advance on Kinston and Goldsboro March 1âÂÂ21. Battle of Wyse Forks March 6âÂÂ8. Kinston March 14. Occupation of Goldsboro March 21. Advance on Raleigh April 10âÂÂ14. Occupation of Raleigh April 14. Bennett's House April 26. Surrender of Johnston and his army. Duty at Charlotte and Raleigh, North Carolina, until August.
The regiment lost a total of 183 men during service; 4 officers and 47 enlisted men killed or mortally wounded, 1 officer and 131 enlisted men died of disease.