12th Wisconsin Infantry

== Regimental History and Service Record ==
Organized at Madison, Wis., October 18 to December 13, 1861. Left State for Fort Leavenworth, Kansas, January 11, 1862. At Weston, Mo., until February 15. Reach Fort Leavenworth February 16. Attached to Dept. of Kansas to June, 1862. District of Columbus, Ky., Dept. of the Tennessee, to October, 1862. 3rd Brigade, 4th Division, District of Jackson, Tenn., to November, 1862. 3rd Brigade, 4th Division, Right Wing 13th Army Corps (Old), Dept. of the Tennessee, to December, 1862. 3rd Brigade, 4th Division, 17th Army Corps, to January, 1863. 3rd Brigade, 4th Division, 16th Army Corps, to July, 1863. 3rd Brigade, 4th Division, 13th Army Corps, to August, 1863. 3rd Brigade, 4th Division, 17th Army Corps, to April, 1864. 1st Brigade, 4th Division, 17th Army Corps, to July, 1864. 1st Brigade, 3rd Division, 17th Army Corps, to July, 1865.
SERVICE--March from Fort Leavenworth to Fort Scott, Kansas, March 1-7, 1862, and duty there until March 27. Ordered to Lawrence, Kansas, March 27, thence to Fort Riley April 20 and to Fort Leavenworth May 27. Moved to St. Louis, Mo., thence to Columbus, Ky., May 29-June 2. Repairing Mobile & Ohio Railroad and duty at Union City and Humboldt, Tenn., until October 1. Moved to Bolivar October 1 and duty there until November 2. Grant's Central Mississippi Campaign, operations on the Mississippi Central Railroad, November 2, 1862, to January 10, 1863. Reconnaissance from La Grange toward Hilly Springs November 8, 1862. Moved to Lumpkin's Mills December 24, thence march to Colliersville, Tenn., via Holly Springs, Moscow and Lafayette, and guard duty along Memphis & Charleston Railroad until March 14, 1863. Moved to Memphis and duty there until May. Expedition to Coldwater River April 18-24. Hernando April 18. Perry's Ferry, Coldwater River, April 19. Ordered to Vicksburg, Miss., May 11. 
* May 18-July 4, 1863 - Siege of Vicksburg, Mississippi
Advance on Jackson, Miss., July 4-10. Siege of Jackson July 10-17. Duty at Vicksburg until August 15. Ordered to Natchez, Miss., August 15, and duty there until November 22. Expedition to Harrisonburg September 1-8. Near Harrisonburg and capture of Fort Beauregard September 4. Ordered to Vicksburg, Miss., November 22 and duty there until February, 1864. 
* February 3-March 2, 1864 - Expedition from Vicksburg, Mississippi to Meridian, Mississippi
* Champion's Hill and Bolton's Depot February 4. 
* Canton February 29. 
* Veterans on furlough until May. 
* Non-veterans on duty at Vicksburg until April, then Join Regiment at Cairo, Ill. Moved to Clifton, Tenn., May 5-14, thence march to Ackworth, Ga., via Huntsville and Decatur, Ala., and Rome, Ga., May 14-June 8. 
* June 8-September 8, 1864 - The Atlanta Campaign
** Operations about Marietta and against Kenesaw Mountain June 10-July 2. 
** Assault on Kenesaw June 27. 
** Nickajack Creek July 2-5. 
** Howell's Ferry July 5. 
** Chattahoochie River July 5-17. 
** Nickajack Creek July 6-8. 
** Leggett's or Bald Hill July 20-21. 
** July 22, 1864 - Battle of Atlanta, Georgia
** July 22-August 25, 1864 - Siege of Atlanta, Georgia
** Ezra Chapel July 28. 
** Flank movement on Jonesboro August 25-30. 
** Battle of Jonesboro August 31-September 1. 
** Lovejoy Station September 2-6. 
* Operations against Hood in North Georgia and North Alabama September 30-November 3. 
* November 15-December 21, 1864 - The Savannah Campaign
** December 10-21, 1864 - Siege of Savannah, Georgia
* January 1-April 26, 1865 - The Carolinas Campaign
** Pocotaligo, S.C., January 14. 
** Salkehatchie Swamp February 2-5. 
** Binnaker's Swamp, South Edisto River, February 9. 
** Orangeburg February 11-12. 
** Columbia February 16-17. 
** Battle of Bentonville, N. C., 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. 
* Moved to Louisville, Ky., June. 
* Mustered out July 20, 1865.
== Regimental Roster ==
== Regiment Statistical Information ==
* Regiment lost during service 3 Officers and 93 Enlisted men killed and mortally wounded and 3 Officers and 224 Enlisted men by disease. Total 323.
== Legacy ==
== Notes ==
== Sources == 
* (Pages 702-738)
* (Pages 704, 715, 721, 723, 779, 785, 835, 1678)
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