78th Illinois Infantry

== Regimental History and Service Record ==
Organized at Quincy, Ill., and mustered in September 1, 1862. Left State for Louisville, Ky., September 19, 1862. Attached to 39th Brigade, 12th Division, Army of the Ohio, to November, 1862. Gilbert's Command, District of Western Kentucky, Department of the Ohio, to February, 1863. Franklin, Tenn., Army of Kentucky, Dept. of the Cumberland, to June, 1863. 2nd Brigade, 1st Division Reserve Corps, Army of the Cumberland, to October, 1863. 2nd Brigade, 2nd Division, 14th Army Corps, to June, 1865.
SERVICE.--Moved to Shephardstown, Ky., October 5, 1862, and guard Louisville & Nashville R. R. from Elizabethtown to New Haven, with Headquarters at New Haven, until January 30, 1863. Action at Muldraugh's Hill December 28, 1862 (Cos. "B" and "C," captured by Morgan). New Haven December 30 (Co. "H"). Moved to Nashville, Tenn., January 30-February 7, 1863. Repulse of Forest's attack on Fort Donelson, Tenn., February 3. Moved to Franklin, Tenn., February 12, and duty there until June 23. Actions at Franklin March 4, April 10 and June 4-5. March to Triune, Murfreesboro and thence to Army near Shelbyville, June 24-28. Middle Tennessee (or Tullahoma) Campaign June 28-July 7. Occupation of Shelbyville July 1. Occupation of Middle Tennessee until August 16. 
* August 16-September 22, 1863 - The Chickamauga Campaign
** September 19-September 20, 1863 - Battle of Chickamauga, Georgia
* September 24-October 27, 1863 - Siege of Chattanooga, Tennessee
* November 23-27, 1863 - The Chattanooga/Ringgold Campaign
** Tunnel Hill November 23-24.
** Mission Ridge November 24-25. 
** Chickamauga Station November. 26 
** Regiment temporarily attached to 15th Army Corps November 24
* March to relief of Knoxville November 29-December 17
* Duty at Rossville, Ga., until May 1864
* Demonstration on Dalton, Ga., February 22-27
* Tunnel Hill, Buzzard's Roost Gap and Rocky Faced Ridge February 23-25. 
* Reconnaissance from Rossville to La Fayette April 11-13. 
* May 1-September 8, 1864 - The Atlanta Campaign
** Tunnel Hill May 6-7. 
** May 8-11, 1864 - Demonstration against Rocky Faced Ridge, Georgia
** Buzzard's Roost Gap May 8-9. 
** Demonstration on Dalton May 9-13. 
** May 14-May 15, 1864 - Battle of Resaca, Georgia
** Rome May 17-18. 
** Advance on Dallas May 19-25. 
** May 25-June 5, 1864 - Operations in Bartow County, Georgia
** Operations about Marietta and against Kenesaw Mountain June 9-July 2. 
** Pine Mountain June 11-14. 
** Lost Mountain June 15-17. 
** Assault on Kenesaw June 27. 
** Ruff's Station, Smyrna Camp Ground, July 4. 
** Chattahoochie River July 517. 
** Battle of Peach Tree Creek July 19-20. 
** July 22-August 25, 1864 - Siege of Atlanta, Georgia
** Utoy Creek August 5.7. 
** Flank movement on Jonesboro August 25-30. 
** Battle of Jonesboro August 31-September 1. 
** Lovejoy Station September 2-6. 
** Operations In North Georgia and North Alabama against Forest and Hood September 29-November 3. 
** Florence October 6-8. 
* November 15-December 21, 1864 - The Savannah Campaign
** December 10-21, 1864 - Siege of Savannah, Georgia
* January 1-April 26, 1865 - The Carolinas Campaign
** Averysboro, Taylor's Hole Creek, N. C., March 16. 
** Battle of Bentonville March 19-21. 
** Occupation of Goldsboro March 24. 
** Advance on Raleigh April 10-14. 
** Occupation of Raleigh April 14. 
** Bennett's House April 26. 
*** Surrender of Johnston and his army. 
* March to Washington, D.C., via Richmond, Va., April 29-May 19. 
* Grand Review May 24. 
* Mustered out June 7, 1865.
== Regimental Roster ==
 
 
 Field and Staff Officers
 
 
 Regimental Band
 
 
 Company A
 
 
 Company B
 
 
 Company C
 
 
 Company D
 
 
 Company E
 
 
 Company F
 
 
 Company G
 
 
 Company H
 
 
 Company I
 
 
 Company K
 
 
 Unassigned
 
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== Regiment Statistical Information ==
* Regiment lost during service 9 Officers and 95 Enlisted men killed and mortally wounded and 117 Enlisted men by disease. Total 221.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 701, 703, 704, 705, 707, 715, 721, 722, 834, 860, 866, 1079-1080)
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