43rd Illinois Infantry

== Regimental History and Service Record ==
The "Koerner Regiment"
Organized at Camp Butler, Ill., and mustered in October 12, 1861. Moved to Benton Barracks, Mo., October 13, thence to Tipton and Otterville, November 3-4. Attached to Dept. of Missouri to February, 1862. 3rd Brigade, 1st Division, District of Cairo, February, 1862. 3rd Brigade, 1st Division, District of West Tennessee and Army of the Tennessee, to July, 1862. 3rd Brigade, 1st Division, District of Jackson to September, 1862. Unattached District of Jackson to November, 1862. Post of Bolivar, District of Jackson, 13th Army Corps (Old), Dept. of the Tennessee, to December, 1862. Post of Bolivar, District of Jackson, 16th Army Corps, to March, 1863. 1st Brigade, 3rd Division, 16th Army Corps, to May, 1863. 1st Brigade, Kimball's Provisional Division, 16th Army Corps. to July, 1863. 1st Brigade, Kimball's Provisional Division, District of Eastern Arkansas, to August, 1863. 1st Brigade, 2nd Division, Arkansas Expedition to November, 1863. 2nd Brigade, 2nd Division, Arkansas Expedition, to January, 1864. 2nd Brigade, 2nd Division, 7th Army Corps, Dept. of Arkansas, to March, 1864. 3rd Brigade, 3rd Division, 7th Army Corps, to May, 1864. 2nd Brigade, 1st Division, 7th Army Corps. garrison at Little Rock, Ark., to January, 1865. 1st Brigade, 1st Division, 7th Army Corps, to August, 1865. Dept. of Arkansas, to November, 1865.
SERVICE.--Duty at Otterville, Mo., until December 30, 1861. March to Tipton December 30-31, thence to Benton Barracks January 20-21, 1862. Moved to Fort Henry, Tenn., February 6-8, and to Fort Donelson February 25-26, thence to Savannah, Tenn., March 4-12. Expedition to Pinhook March 18-19. 
* Moved to Pittsburg Landing, Tenn., March 22. 
* April 6-7, 1862 - Battle of Shiloh, Tennessee
Advance on and siege of Corinth, Miss., April 29-May 30. March to Bethel, thence to Jackson, Tenn., June 4-16, and to Bolivar July 17-19, and duty there until May, 1863. March to support of Rosecrans at Iuka, Miss., September 15-23, 1862. March to LaGrange and return October 9-10. Grant's Central Mississippi Campaign October 31, 1862, to January 10, 1863. Operations against Forest in West Tennessee December 18, 1862, to January 3, 1863. Salem Cemetery, near Jackson, December 19, 1862. Scouting in West Tennessee and post duty at Bolivar until May, 1863. 
* May 26-29, 1863 - Expedition from Bolivar, Tennessee
* Movement to Memphis, Tenn., thence to Vicksburg, Miss., May 31-June 3. 
* Expedition up the Yazoo to Satartia June 2-8. 
* Action at Mechanicsburg, Satartia, June 4. 
* Moved to Haines' Bluff June 6. 
* May 18-July 4, 1863 - Siege of Vicksburg, Mississippi
Moved to Big Black July 12, thence to Snyder's Bluff July 22, and to Helena, Ark., July 29-August 1. Steele's Expedition to Little Rock, Ark., August 1-September 10. Engagement at Bayou Fourche and capture of Little Rock September 10. Duty at Little Rock until March, 1864. 
* March 23-May 3, 1864 - Expedition from Little Rock to Camden, Arkansas 
** April 2-April 3, 1864 - Skirmishes at Okolona, Arkansas
Prairie D'Ann April 9-13. Camden April 15. Princeton April 28. Saline Bottom April 29. Jenkin's Ferry April 30. Garrison duty at Little Rock until November, 1865. Princeton May 27, 1864. Scouts from Pine Bluff toward Camden and Monticello January 26-31, 1865. Mustered out November 30 and discharged at Camp Butler, Ill., December 14, 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 8 Officers and 75 Enlisted men killed and mortally wounded and 2 Officers and 161 Enlisted men by disease. Total 246.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 682, 779, 846, 857, 1065)
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