Illinois in the Civil War

United States     U.S. Military      Illinois      Illinois Military      Illinois in the Civil War

Introduction
Over 250,000 Illinois men served in the Union Army, the fourth most of any northern state. Illinois supplied 150 infantry regiments, 17 cavalry regiments, and 2 light artillery regiments. Most served in the Western Theater, Illinois also was a major source of military supplies, food, and clothing. A number of national cemeteries were established in Illinois.

Illinois Military Units
Most units were numbered, however, some were named. See the table below for lists of the regiments, battalions, batteries, and unassigned companies.

The information in the lists of Illinois Military Units comes from the Civil War Soldiers and Sailors web site. This web site can also be searched by the name of a soldier. Illinois Units by Number or by Name Union Units 1st-26th 27th-76th 77th-126th 127th-156th A to Z

Illinois Units by Type of Unit Union Units Infantry Cavalry Artillery Colored Troops Other Units

Regiments 1st to 26th

 * 1st Battalian, Illinois State Militia "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 1st Regiment, Illinois Light Artillery First known as Smith's Chicago Light Artillery. Entered State service for three months, April 17, 1861. Mustered out at Chicago, Illinois, July 3, 1865. Thereafter Batteries were organized and mustered in at various times and places. Batteries also mustered out at various times and places.


 * 1st Regiment, Illinois Cavalry Seven Companies, "A" to "G," organized at Alton, Illinois, and mustered in July 3, 1861. Mustered out July 14, 1862. Companies "I," "H" and "K" were not mustered with the Regiment and never served with it. They also organized at Alton, Illinois and mustered out in 1861.


 * 1st Battalion, Illinois State Militia "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 2nd Regiment, Illinois Light Artillery Organized at Peoria, Illinois, and mustered into State service May 23, 1861. Duty in District of Southeast Missouri till July, 1863.) Battery mustered out July 28, 1865.


 * Chapman's Peoria Independent Battery Light Artillery Organized from 14th Illinois Infantry and attached to that Regiment until February, 1862, when designated Battery "B," 2nd Light Artillery.


 * 2nd Regiment, Illinois Cavalry Organized at Ottawa, Illinois,and mustered in September 26, 1861. Mustered out November 22, 1865. Discharged at Springfield, Illinois, January 3, 1866.


 * 3rd Regiment, Illinois Cavalry Organized at Camp Butler, Illinois, and mustered in August 27, 1861. Mustered out October 18, 1865.


 * 4th Regiment, Illinois Cavalry Organized at Ottawa, Illinois, and mustered in September 26, 1861. Consolidated with 14th Illinois Cavalry June 14, 1865.


 * 5th Regiment, Illinois Cavalry Organized at Camp Butler, Illinois, August 31 to December 30, 1861. Mustered out October 27, 1865.


 * 5th Regiment, Illinois Infantry "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 6th Regiment, Illinois Cavalry Organized at Camp Butler, Illinois, November 19, 1861. Mustered out at Selma, Alabama, November 5, and discharged at Springfield, Illnois, November 20, 1865.


 * 7th Regiment, Illinois Cavalry Organized at Camp Butler, Illinois, and mustered in October 13, 1861. Mustered out October 20, 1865, and discharged at Camp Butler, Illinois, November 17, 1865.


 * 7th Regiment, Illinois Infantry Regiment organized at Cairo, Illinois, July 25, 1861. Mustered out July 9, 1865


 * 7th Regiment, Illinois Infantry (3 months, 1861) Organized at Camp Yates, Illinois, and mustered in April 12, 1861. Mustered out July 25, 1861.


 * 8th Regiment, Illinois Infantry Organized at Cairo, Illinois, for three years' service July 25, 1861. Mustered out at Baton Rouge May 4 and discharged at Springfield, Ill., May 13, 1866.


 * 8th Regiment, Illinois Infantry (3 months, 1861) Organized at Springfield, Illinois, and mustered in for three months' service April 25, 1861. Mustered out July 25, 1861.


 * 8th Regiment, Illinois Cavalry Organized at St. Charles, Illinois, and mustered in September 18, 1861. Mustered out July 17, 1865.


 * 9th Regiment, Illinois Cavalry Organized at Camp Douglas, Chicago, Illinois, and mustered in November 30, 1861. Mustered out at Selma, Alabama October 31, 1865.


 * 9th Regiment, Illinois Infantry (3 months, 1861) Organized at Springfield, Illinois, and mustered in for three months' service April 26, 1861. Mustered out July 26, 1861.


 * 9th Regiment, Illinois Infantry Organized at Cairo, Illinois, July 26 to August 31, 1861. Mustered out July 9, 1865.


 * 10th Regiment, Illinois Infantry Organized at Cairo,Illinois Illinois July 29, 1861. Mustered out July 4, 1865, and discharged at Chicago, July 11, 1865.


 * 10th Regiment, Illinois Cavalry Organized at Camp Butler, Illinois and mustered in November 25, 1861. Regiment mustered out November 22, 186


 * 10th Regiment, Illinois Infantry (3 months, 1861) Regiment formed from first four Companies reporting at Springfield, Illinois April 20, 1861, which were ordered to Cairo,Illinois April 22. Regiment fully organized by the addition of three other Infantry Companies and three Artillery Companies and mustered in for three months' service by Capt. John Pope, U. S. A., April 29, 1861. Attached to Prentiss' Brigade and on garrison duty at Cairo, Illinois till July. Mustered out July 29, 1861.


 * 11th Regiment, Illinois Infantry (3 months, 1861) Organized at Springfield, Illinois and mustered in April 30, 1861. Mustered out July 30, 1861.


 * 11th Regiment, Illinois Cavalry Organized at Peoria, Illinois and mustered in December 20, 1861. Mustered out September 30, 1865.


 * 11th Regiment, Illinois Infantry Organized at Cairo, Illinois August 1, 1861.&lt;br Mustered out July 10, 1865, and discharged at Camp Butler, Illinois July 18, 1865.


 * 12th Regiment, Illinois Infantry Organized at Cairo, Illinois August 1, 1861. Mustered out July 10, 1865, and discharged at Camp Butler, Illinois July 18, 1865.


 * 12th Regiment, Illinois Infantry (3 months, 1861) Organized at Springfield, Illinois and mustered in May 2, 1861. Mustered out August 1, 1861 probably Cairo, Illinois.


 * 12th Regiment, Illinois Cavalry Companies "A," "B," "C," "D," "E" and "G" organized at Springfield, Ill., and mustered in February 24, 1862. Mustered out May 29, 1866.


 * 13th Regiment, Illinois Cavalry Eight Companies organized at Camp Douglass, Ill., October 30, 1861, to February 20, 1862. Mustered out August 31, 1865.


 * 13th Regiment, Illinois Infantry Organized at Dixon, Ill., and mustered into State service April 21, 1861. Mustered into U. S. service by Capt. John Pope May 24, 1861, being the first three years Regiment from Illinois mustered into U. S. service. Mustered out June 18, 1864.


 * 14th Regiment, Illinois Infantry Organized at Jacksonville, Ill., and mustered in May 25, 1861. Mustered out at Fort Leavenworth, Kansas, September 18, 1865.


 * Veteran Battalion, 14th and 15th Regiment, Illinois Infantry "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 14th Regiment, Illinois Cavalry Organized at Peoria, Ills., and mustered in 1st and 2nd Battalions, January 7, 1863. 3rd Battalion February 6, 1863. Mustered out at Nashville, Tennessee, July 31, 1865.


 * 15th Regiment, Illinois Infantry Organized at Freeport, Ill., and mustered in May 24, 1861. Mustered out at Fort Leavenworth, Kansas, September 16, 1865.


 * 15th Regiment, Illinois Cavalry Organized December 25, 1862, in the field and at Camp Butler, Ill., by assignment of Stewart's Independent Cavalry Battalion, organized at Jackson, Tenn., July, 1862, as Companies "A," "B," "C," "D," "E" and "F." Gilbert's Independent Cavalry Company, 52nd Illinois, organized at Geneva October 25, 1861, as Company "G." Kane County Independent Cavalry Company, organized September 1, 1861, as Company "H." Jenks' Company Dragcons, 36th Illinois, organized at Camp Hammond, Ill., September 23, 1861, as Company "I." Sherer's Company Dragoons, 36th Illinois, organized at Camp Hamilton, Ills., September 23, 1861, as Company "K." Ford's Cavalry Company, 53rd Illinois, organized at Ottawa, Ills., January 1, 1862, as Company "L." Company "K," 1st Illinois Cavalry, assigned as Company "M," but mustered out December 27, 1862.  Moved to Louisville, Ky., June 12.


 * 16th Regiment, Illinois Infantry Organized at Quincy, Ill., and mustered in May 24, 1861. Moved to Louisville,Kentucky, June 12. Mustered out July 8,1865 probably Louisville, Kentucky.


 * 16th Regiment, Illinois Cavalry Organized at Camp Butler, near Springfield, Ills., January to April, 1863 probably at Decatur, Alabama.


 * 17th Regiment, Illinois Cavalry Organized at St. Charles, Ills., and 8 Companies mustered in January 28, 1864. Four Companies mustered in February 12, 1864. Mustered out Companies "C," "E," "I" and "M," November 23, and rest of Regiment December 15 to 22, 1865 probably Kansas.


 * 17th Regiment, Illinois Infantry Organized at Peoria, Illinois., and mustered in May 24, 1861. Mustered out June 4, 1864, expiration of term.


 * 18th Regiment, Illinois Cavalry "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 18th Regiment, Illinois Infantry Organized at Aurora, Illinois., and mustered into State service May 19, and into U. S. service May 28, 1861. Non-Veterans mustered out May 28, 1864. Regiment mustered out at Little Rock, Arkansas., December 16, and discharged, at Camp Butler, Illinois., December 31, 1865.


 * 19th Regiment, Illinois Infantry Four Chicago Companies mustered into State service at Camp Yates May 4, 1861. Regiment organized at Chicago, Illinois, and mustered in June 17, 1861. Moved to Chicago June 8-17. Mustered out July 9, 1864; expiration of term.


 * 20th Regiment, Illinois Infantry Organized at Joliet, Illinois, and mustered in June 13, 1861. Mustered out July 16 and discharged at Chicago, Illinois, July 24, 1865.


 * 21st Regiment, Illinois Infantry Organized at Mattoon, Illinois, and mustered in June 28, 1861. Mustered out at San Antonio, Texas, December 16, and discharged at Camp Butler, Illinois, January 18, 1866.


 * 22nd Regiment, Illinois Infantry Organized at Belleville, Illinois, and mustered in June 25, 1861. Mustered out July 7, 1864, expiration of term.


 * 23rd Regiment, Illinois Infantry Organized at Chicago, Ill., and mustered in June 15, 1861. Mustered out at Richmond, Virginia, July 24, and discharged at Chicago, Illinois, July 30,1865.


 * 23 Regiment, Illinois Infantry (Irish Brigade) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * 24th Regiment, Illinois Infantry Organized at Chicago, Illinois, and mustered in July 8, 1861. Mustered out August 6, 1864. Expiration of term.


 * 25th Regiment, Illinois Infantry Organized at St. Louis, Missouri, and mustered in August 4, 1861. Mustered out at Camp Butler, Illinois, September 5, 1864.


 * 26th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in August 31, 1861. Moved to Louisville, Ky., June, and duty there until July. Mustered out July 20, and discharged at Springfield, Illinois, July 28, 1865.

Regiments 27th to 49th

 * 27th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, August 10, 1861. At Jacksonville, Illinois Ordered to Springfield, Illinois, August 25..Mustered out September 20, 1864.


 * 28th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in August 15, 1861. Mustered out March 15 and discharged at Camp Butler, Illinois, May 13, 1866.


 * 29th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in August 19, 1861. Duty at Millican, Hempstead, Brenham and Beaumont, on Texas Central R. R. until November and Mustered out November 6 and discharged from service November 28, 1865.


 * 30th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in August 28, 1861. Mustered out July 16 and discharged at Chicago, Illinois, July 24, 1865.


 * 31st Regiment, Illinois Infantry Organized at Jacksonville, Illinois, and mustered in at Cairo, Illinois. Mustered out July 19 and discharged at Springfield, Illinois, July 31, 1865.


 * 32nd Regiment, Illinois Infantry Organized at Camp Butler, Illinois and mustered in December 31, 1861. Ordered to Fort Leavenworth, Kansas, and there mustered out September 16, 1865.


 * 33rd Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 3, 1861. Mustered out November 24 and discharged at Chicago, Illinois, December 6, 1865.


 * 34th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 7, 1861 Mustered out July 12 and discharged at Chicago, Illinois, July 17, 1865.


 * 35th Regiment, Illinois Infantry Mustered in at St. Louis, Missouri, August 28. 1861. Moved to Springfield, Illinois, August 31 and Mustered out September 27, 1864


 * 36th Regiment, Illinois Infantry Organized at Aurora, Illinois, and mustered in September 23, 1861. Mustered out October 8 and discharged at Springfield, Illinois, October 27, 1865.


 * 37th Regiment, Illinois Infantry Organized at Chicago, Illinois, and mustered in September 18, 1861. Moved to Houston July 17. Mustered out May 15, 1866.


 * 38th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in August 15, 1861. Moved to Houston July 17. Mustered out December 31, 1865.


 * 39th Regiment, Illinois Infantry Organized at Chicago, Illinois, and mustered in October 11, 1861. Mustered out December 6 and Discharged at Chicago, Illinois December 16, 1865.


 * 40th Regiment, Illinois Infantry Organized at Springfield, Illinois, and mustered in August 10, 1861. Moved to Louisville, Kentucky June 6Mustered out July 24, 1865.


 * 41st Regiment, Illinois Infantry Organized at Decatur, Illinois, and mustered in August 5, 1861. Consolidated with 53d Illinois Infantry December 23, 1864.


 * 42nd Regiment, Illinois Infantry Organized at Chicago, Illinois, July 22, 1861. Mustered out at Camp Irwin December 16 and discharged at Springfield, Illinois, January 10, 1866.


 * 43rd Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in October 12, 1861. Mustered out November 30 and discharged at Camp Butler, Illinois, December 14, 1865.


 * 44th Regiment, Illinois Infantry Organized at Chicago, Illinois, and mustered in September 13, 1861. Camped on La Placido River until September 25. Mustered out September 25, 1865.


 * 45th Regiment, Illinois Infantry Organized at Galena, Illinois, and mustered in at Camp Douglas, Illinois, December 25, 1861. Moved to Louisville, Kentucky. Mustered out July 12, 1865.


 * 46th Regiment, Illinois Infantry Organized at Camp Butler, Illinois December 28, 1861, Mustered out at Baton Rouge, Louisiana, January 20, 1866, and discharged at Springfield, Illinois, February 1, 1866


 * 47th Regiment, Illinois Infantry Organized at Peoria, Illinois, and mustered in August 16, 1861. March to Montgomery April 13-25. Duty there and at Selma until January, 1866. Mustered out January 21, 1866.


 * 48th Regiment, Illinois Infantry Organized at Camp Butler, Illinois September, 1861 To Little Rock, Arkansas, June 25. Mustered out August 15, 1865.


 * 49th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in December 31, 1861. Ordered to Paducah, Kentucky December 29. Mustered out September 9, 1865.

Regiments 50th to 80th

 * 50th Regiment, Illinois Infantry Organized at Quincy, Illinois and mustered in September 12, 1861. Mustered out: July 13, 1865 at Louisville, Kentucky.


 * 51st Regiment, Illinois Infantry Organized at Quincy, Illinois and mustered in September 12, 1861. Mustered out: September 25, 1865 at Camp Irwin, Texas and discharged at Chicago, Illinois on October 15, 1865.


 * 52nd Regiment, Illinois Infantry Organized at Geneva, Illinois and mustered in November 19, 1861. Mustered out: July 5, 1865 and discharged at Chicago, Illinois, July 12, 1865.


 * 53rd Regiment, Illinois Infantry Organized at Ottawa, Illinois, January, 1862. Mustered out: July 22, 1865 at Louisville, Kentucky.


 * 54th Regiment, Illinois Infantry Organized at Camp Dubois, Anna, Illinois, as a part of the Kentucky Brigade, and mustered in February, 1862. Mustered out: October 15, 1865, and discharged at Camp Butler, Illinois.


 * 55th Regiment, Illinois Infantry Organized at Camp Douglas, Chicago, Illinois, and mustered in October 31, 1861. Moved to Little Rock, Arkansas, June 30-July 6. Mustered out August 14, 1865.


 * 56th Regiment, Illinois Infantry Organized at Shawneetown, Illinois, and mustered in February 27, 1862. Moved to Little Rock, Arkansas, on duty there until August. Mustered out August 12, 1865.


 * 57th Regiment, Illinois Infantry Organized at Camp Douglas, Chicago, Illinois, and mustered in December 26, 1862. Moved to Louisville, Kentucky., June 3. Mustered out July 7, 1865.


 * 58th Regiment, Illinois Infantry Organized at Camp Douglas, Chicago, Illinois, February 11, 1862. Duty at Montgomery and in the District of Alabama until April, 1866. Mustered out April 15, 1866.


 * 59th Regiment, Illinois Infantry Organized at St. Louis, Missouri, as 9th Missouri Infantry, September 18, 1861. At New Braunfels, Texas, until December. Mustered out December 8, 1865.


 * 60th Regiment, Illinois Infantry Organized at Camp Dubois, Anna, Illinois, and mustered in February 17, 1862. Moved to Louisville, Ky., June 12. Provost guard at headquarters 14th Army Corps until July 31. Mustered out July 31, 1865.


 * 61st Regiment, Illinois Infantry Organized at Carrollton, Illinois, and mustered in February 5, 1862. Mustered out: Nashville, Tennessee, September 8 and discharged at Camp Butler, Illinois, September 27, 1865.


 * 62nd Regiment, Illinois Infantry Organized at Camp Dubois, Anna, Illinois, April 10, 1862. Moved to Fort Gibson, Cherokee Nation, July 28, 1865, On duty there until March, 1866. Mustered out March 6, 1866.


 * 63rd Regiment, Illinois Infantry Organized at Camp Dubois, Anna, Illinois, and mustered in April 10, 1862. Moved to Louisville, Ky., June 3-6. Mustered out July 13, 1865.


 * 64th Regiment, Illinois Infantry (Yates' Sharpshooters) Organized at Camp Butler, Illinois, as a Battalion of 4 Companies, December, 1861. Mustered out: July 11 and discharged at Chicago, Illinois, July 18, 1865.


 * 65th Regiment, Illinois Infantry (Scotch Regiment) Organized at Camp Douglas, Chicago, Illinois, and mustered in May 1, 1862. Mustered out: July 13 and discharged at Chicago, Illinois, July 26. 1865.


 * 66th Regiment, Illinois Infantry Organized at Benton Barracks, Missouri, September and October, 1861. Mustered in as 14th Missouri Infantry November 23, 1861. Moved to Louisville, Kentucky, June 3-8. Mustered out July 7, 1865.


 * 67th Regiment, Illinois Infantry Organized at Camp Douglass, Chicago, Illinois, June 13, 1862. Assigned to guard duty at Camp Douglass until October. Mustered out October 6, 1862.


 * 68th Regiment, Illinois Infantry Organized at Camp Butler, June 16, 1862 Moved to Camp Butler, Illinois, September 17-21. Mustered out September 27, 1862.


 * 69th Regiment, Illinois Infantry Organized at Camp Douglass, Chicago, Illinois, and mustered in June 14, 1862. At Camp Douglass until September. Mustered out September 27, 1862.


 * 70th Regiment, Illinois Infantry Organized at Camp Butler and mustered in July 4, 1862. Assigned to guard duty at Camp Butler, Illinois, until October. Mustered out October 23, 1862.


 * 71st Regiment, Illinois Infantry Organized at Camp Douglass, Chicago, Illinois, July 26, 1862. At Little Obion bridge (3 Cos.). Mustered out October 29, 1862.


 * 72nd Regiment, Illinois Infantry Organized at Chicago, Illinois, and mustered in August 23, 1862. Moved to Vicksburg, Mississippi, July 19. Mustered out August 7, 1865.


 * 73rd Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in August 21, 1862 Moved to Nashville, Tennessee, and duty there until June. Mustered out June 12, 1865.


 * 74th Regiment, Illinois Infantry Organized at Rockford, Illinois, and mustered in September 4, 1862. Moved to Nashville, Tennessee, On duty there until June. Mustered out June 10, 1865.


 * 75th Regiment, Illinois Infantry Organized at Dixon, Illinois, and mustered in September 2, 1862 Mustered out: Nashville, Tennessee, June 12, and discharged at Chicago, Illinois, July 1, 1865.


 * 76th Regiment, Illinois Infantry Organized at Kankakee, Illinois, and mustered in August 22, 1862. Mustered out: July 22 and discharged at Chicago, Illinois, August 4, 1865.


 * 77th Regiment, Illinois Infantry Organized at Peoria, Illinois, and mustered in September 3, 1862. At Mobile until July. Mustered out July 10, 1865.


 * 78th Regiment, Illinois Infantry Organized at Quincy, Illinois, and mustered in September 1, 1862. Marched to Washington, D. C., via Richmond, Virginia, April 29-May 19, 1865. Mustered out June 7, 1865.


 * 79th Regiment, Illinois Infantry Organized at Mattoon, Illinois, and mustered in August 28, 1862. Moved to Nashville April 22,1865 and duty there until June. Mustered out June 12 and discharged at Camp Butler, Illinois, June 23, 1865.


 * 80th Regiment, Illinois Infantry Organized at Centralia, Illinois, and mustered in August 25, 1862. Moved to Nashville, Tennessee, and duty there until June. Mustered out June 10, 1865.

Regiments 81st to 100th

 * 81st Regiment, Illinois Infantry Organized at Anna, Illinois, and mustered in August 26, 1862. Moved to Chicago, Illinois, via Meridian and Vicksburg, Mississippi, July 19-August 5. Mustered out August 5, 1865.


 * 82nd Regiment, Illinois Infantry Organized at Springfield, Illinois, and mustered in October 23, 1862. Marched to Washington, D.C., via Richmond, Virginia, April 29-May 19. Mustered out June 16, 1865.


 * 83rd Regiment, Illinois Infantry Organized at Monmouth, Illinois, and mustered in August 21, 1862. Garrison duty at Nashville until June, 1865. Mustered out: Nashville, Tennessee, June 26, and discharged at Chicago, Illinois., July 5, 1865.


 * 84th Regiment, Illinois Infantry Organized at Quincy, Illinois, and mustered in September 1, 1862. Moved to Nashville, Tennessee, and duty there until June 1865. Mustered out at Nashville, Tennessee, June 8, and discharged June 16, 1865.


 * 85th Regiment, Illinois Infantry Organized at Peoria, Illinois, and mustered in August 27, 1862. Marched to Washington, D. C., via Richmond, Virginia, April 29-May 19, 1865. Mustered out June 5, 1865.


 * 86th Regiment, Illinois Infantry Organized at Peoria, Illinois, and mustered in August 27, 1862. Marched to Washington, D.C., via Richmond, Virginia, April 29-May 19, 1865. Mustered out June 6 and discharged at Chicago, Illinois, June 21, 1865.


 * 87th Regiment, Illinois Infantry Organized at Shawneetown, Illinois, and mustered in October 3, 1862. Moved to Helena, Arkansas, and duty there until June 1865. Scout from Helena to Madison, Arkansas, February 8-13. Friar's Point February 10. Skirmish near Madison February 12. Scout from Helena to Clark's Store February 24 (Detachment). Mustered out June 16, 1865.


 * 88th Regiment, Illinois Infantry Organized at Camp Douglas, Chicago, Illinois, and mustered in September 4, 1862. Mustered out: at Nashville, Tennessee, June 9, and discharged at Chicago, Illinois, June 22, 1865.


 * 89th Regiment, Illinois Infantry Organized at Chicago, Illinois, and mustered in August 27, 1862. Mustered out: June 10 and discharged at Camp Douglas, Chicago, Illinois, June 24, 1865.


 * 90th Regiment, Illinois Infantry Organized at Chicago, Illinois, and mustered in September 7, 1862. Marched to Washington, D.C., via Richmond, Virginia, April 29-May 19. Mustered out June 10, 1865.


 * 91st Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 8, 1862. Mustered out: July 12 and discharged at Chicago, Illinois, July 28, 1865.


 * 92nd Regiment, Illinois Infantry Organized at Rockford, Illinois, and mustered in September 4, 1862. Mustered out: Concord, North Carolina, June 21, and discharged at Chicago, Illinois, July 10, 1865.


 * 93rd Regiment, Illinois Infantry Organized at Chicago, Illinois, and mustered in October 13, 1862. Marched to Washington, D. C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 23 and discharged at Chicago, Illinois, July 7, 1865.


 * 94th Regiment, Illinois Infantry Organized in McLean County and mustered in August 20, 1862. Moved to Galveston, Texas, and duty there until July 17. Mustered out July 17, 1865.


 * 95th Regiment, Illinois Infantry Organized at Rockford, Illinois, and mustered in September 4, 1862. Moved to Meridian and Vicksburg, Mississippi. Mustered out August 17, 1865. Recruits transferred to 47th Illinois Infantry.


 * 96th Regiment, Illinois Infantry Organized at Rockford, Ilinois, and mustered in September 6, 1862. Moved to Nashville, Tennessee, and duty there until June. Mustered out June 10, 1865.


 * 97th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 16, 1862. Moved to Mobile May 11, thence to Galveston, Texas, and duty there until July. Mustered out July 29, 1865.


 * 98th Regiment, Illinois Infantry Organized at Centralia, Illinois, and mustered in September 3, 1862. Moved to Edgefield and duty there until June, 1865. Mustered out June 2 and discharged at Springfield, Illinois, July 7, 1865.


 * 99th Regiment, Illinois Infantry Organized at Florence, Illinois, and mustered in August 23, 1862. Moved to New Orleans, thence to Shreveport, Louisiana, May 28-June 6. To Baton Rouge July 19. Mustered out July 31 and discharged at Springfield, Illinois, August 9, 1865.


 * 100th Regiment, Illinois Infantry Organized at Joliet, Illinois, and mustered in August 30, 1862. Moved to Nashville, Tennessee, and duty there until June. Mustered out at Nashville, Tennessee, June 12, and discharged at Chicago, Illinois, June 15, 1865.

Regiments 101st to 130th

 * 101st Regiment, Illinois Infantry Organized at Jacksonville, Illinois, and mustered in September 2, 1862. March to Washington, D. C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 7 and discharged at Springfield, Illinois, June 21, 1865.


 * 102nd Regiment, Illinois Infantry Organized at Knoxville, Illinois, and mustered in September 1, 1862. March to Washington, D. C., via Richmond, Virginia, April 30-May 19. Grand Review May 24. Mustered out June 6 and discharged at Chicago, Illinois, June 14, 1865.


 * 103rd Regiment, Illinois Infantry Organized at Peoria, Illinois, and mustered in October 2, 1862. Moved to Louisville, Kentucky, June 2-4. Mustered out June 14 and discharged at Chicago, Illinois, July 9, 1865.


 * 104th Regiment, Illinois Infantry Organized at Ottawa, Illinois, and mustered in August 27, 1862, and ordered to Louisville, Kentucky. March to Washington, D. C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 6 and discharged at Chicago, Illinois, July 11, 1865.


 * 105th Regiment, Illinois Infantry Organized at Dixon, Illinois, and mustered in September 2, 1862. March to Washington, D. C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 7 and discharged at Chicago, Illinois, July 17, 1865.


 * 106th Regiment, Illinois Infantry Organized at Lincoln, Illinois, and mustered in September 18, 1862. Mustered out July 12 and discharged at Springfield, Illinois, July 24, 1865.


 * 107th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 4, 1862. Duty at Saulsbury, North Carolina, until June 21. Mustered out June 21, 1865.


 * 108th Regiment, Illinois Infantry Organized at Peoria, Illinois, and mustered in August 28, 1862. Moved to Vicksburg, Mississippi, July 18-August 5. Mustered out August 5, 1865.


 * 109th Regiment, Illinois Infantry Organized at Camp Anna, Illinois, and mustered in September 11, 1862. Regiment disbanded April 10, 1863, having lost 237 by desertion and officers (excepting those of Company "K") having proved themselves utterly incompetent. Company "K" transferred to 11th Illinois Infantry.


 * 110th Regiment, Illinois Infantry Organized at Anna, Illinois, and mustered in September 11, 1862. March to Washington, D.C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 5 and discharged at Chicago, Illinois, June 15, 1865.


 * 111th Regiment, Illinois Infantry Organized at Salem, Illinois, and mustered in September 18, 1862. Mustered out June 7 and discharged at Springfield, Illinois, June 27, 1865.


 * 112th Regiment, Illinois Infantry Organized at Peoria, Illinois, and mustered in September 20, 1862. Mustered out at Greensboro, North Carolina, June 20 and discharged at Chicago, Illinois, July 7, 1865.


 * 113th Regiment, Illinois Infantry Organized at Camp Hancock, near Chicago, Illinois, and mustered in October 1, 1862. Repulse of Forrest's attack on Memphis August 21, 1864. Eastport, Mississippi, October 10, 1864. Mustered out June 20, 1865.


 * 114th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 18, 1862. Moved to Vicksburg, Mississippi, July 17. Mustered out August 3 and discharged August 15, 1865.


 * 115th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 13, 1862. Mustered out at Nashville June 11 and discharged at Camp Butler, Illinois, June 23, 1865.


 * 116th Regiment, Illinois Infantry Organized at Decatur, Illinois, and mustered in September 30, 1862. March to Washington, D. C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 7, 1865.


 * 117th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 19, 1862. March to Montgomery April 13-25, and duty there until August. Mustered out August 5, 1865.


 * 118th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, August to October, 1862. Mustered in November 7, 1862. Mustered out October 1. Moved to Camp Butler, Illinois, October 2-10. Discharged October 13, 1865.


 * 119th Regiment, Illinois Infantry Organized at Quincy, Illinois, and mustered in October 7, 1862. March to Montgomery April 13-25. Return to Mobile and duty there until August. Mustered out August 26, 1865.


 * 120th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, by consolidation of 7 Companies recruited for 120th Infantry at Vienna, Illinois, and 3 Companies recruited for the 132nd Infantry at Shawneetown, Illinois. Mustered in October 28, 1862. Mustered out September 7, 1865.


 * 121st Regiment, Illinois Infantry Failed to complete organization.


 * 122nd Regiment, Illinois Infantry Organized at Carlinville, Illinois, and mustered in September 4, 1862. Mustered out at Mobile July 15 and discharged at Springfield, Illinois, August 4, 1865.


 * 123rd Regiment, Illinois Infantry Organized at Mattoon, Illinois, and mustered in September 6, 1862. Moved to Chattanooga, Tennessee., May 23; thence to Nashville and duty there until June 27. Mustered out June 27 and discharged at Springfield, Illinois, July 11, 1865.


 * 124th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in September 10, 1862. Mustered out at Vicksburg, Mississippi, July 28, and discharged at Chicago, Illinois, August 16, 1865.


 * 125th Regiment, Illinois Infantry Organized at Danville, Illinois, and mustered in September 3, 1862. March to Washington, D.C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 9, 1865, and discharged from service.


 * 126th Regiment, Illinois Infantry Organized at Alton, Illinois, and mustered in September 4, 1862. Mustered out July 12, 1865.


 * 127th Regiment, Illinois Infantry Organized at Camp Douglas, Illinois, and mustered in September 6, 1862. March to Washington, D. C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 4 and discharged at Chicago, Illinois, June 17, 1865.


 * 128th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in November 4, 1862. Attached to District of Columbus, Kentucky, 16th Army Corps, Dept. of the Tennessee. Disbanded April 1, 1863, by order of Gen. Grant, having lost in 5 months over 700 men, principally by desertion, and the Officers having proved themselves utterly incompetent, were mustered out of service. The few remaining men were consolidated into a Detachment and consolidated with 9th Illinois Infantry April 1, 1863.


 * 129th Regiment, Illinois Infantry Organized at Pontiac and mustered in September 8, 1862. Moved to Washington, D. C., via Richmond, Virginia, April 29-May 19. Grand Review May 24. Mustered out June 8, 1865.


 * 130th Regiment, Illinois Infantry Organized at Camp Butler, Springfield, Illinois, and mustered in October 25, 1862. Regiment reorganized at Mobile July 11, 1865. Ordered to New Orleans and mustered out August 15, 1865.

Regiments 131st to end

 * 131st Regiment, Illinois Infantry Organized at Old Fort Massac and mustered in November 13, 1862. Regiment consolidated with 29th Illinois Infantry November 15, 1863.


 * 132nd Regiment, Illinois Infantry (100 days, 1864) Organized at Camp Fry, Chicago, Illinois, and mustered in for 100 days June 1, 1864. Mustered out October 17, 1864.


 * 133rd Regiment, Illinois Infantry (100 days, 1864) Organized at Camp Butler, Illinois, and mustered in for 100 days May 31, 1864.


 * 134th Regiment, Illinois Infantry (100 days, 1864) Organized at Camp Fry, Chicago, Illinois, and mustered in for 100 days May 31, 1864. Mustered out October 5, 1864.


 * 135th Regiment, Illinois Infantry (100 days, 1864) Organized at Mattoon, Illinois, and mustered in for 100 days June 6, 1864. Mustered out September 28, 1864.


 * 136th Regiment, Illinois Infantry (100 days, 1864) Organized at Centralia, Illinois, and mustered in for 100 days June 1, 1864. Mustered out at Camp Butler, Illinois, October 22, 1864.


 * 137th Regiment, Illinois Infantry (100 days, 1864) Organized at Camp Wood, Quincy, Illinois, and mustered in for 100 days June 5, 1864. Mustered out September 4, 1864.


 * 138th Regiment, Illinois Infantry (100 days, 1864) Organized at Camp Wood, Quincy, Illinois, and mustered in for 100 days June 21, 1864. Mustered out October 14, 1864.


 * 139th Regiment, Illinois Infantry (100 days, 1864) Organized at Peoria, Illinois, and mustered in for 100 days June 1, 1864. March into Missouri toward Franklin in pursuit of Price, October. Mustered out October 25, 1864.


 * 140th Regiment, Illinois Infantry (100 days, 1864) Organized at Camp Butler, Illinois, and mustered in for 100 days June 18, 1864. Mustered out October 29, 1864. (Volunteered for the defence of Missouri during Price's Invasion.)


 * 141st Regiment, Illinois Infantry (100 days, 1864) Organized at Elgin, Illinois, and mustered in for 100 days June 16, 1864. Mustered out October 10, 1864.


 * 142nd Regiment, Illinois Infantry (100 days, 1864) Organized at Freeport, Illinois, and mustered in for 100 days June 18, 1864. Mustered out October 27, 1864.


 * 143rd Regiment, Illinois Infantry (100 days, 1864) Organized at Mattoon, Illinois, and mustered in for 100 days June 11, 1864. Mustered out September 26, 1864.


 * 144th Regiment, Illinois Infantry (1 year, 1864-65) Organized at Alton, Illinois, and mustered in for 1 year October 21, 1864. Mustered out July 14, 1865.


 * 145th Regiment, Illinois Infantry (100 days, 1864) Organized at Camp Butler and mustered in for 100 days June 9, 1864. Mustered out at Camp Butler September 23, 1864.


 * 146th Regiment, Illinois Infantry (1 year, 1864-65) Organized at Camp Butler, Illinois, and mustered in for 1 year September 18, 1864. Mustered out July 5, 1865.


 * 147th Regiment, Illinois Infantry (1 year, 1865) Organized at Camp Fry, Chicago, Illinois, for 1 year February 18, 1865. Moved to Louisville, Kentucky, thence to Nashville, Tennessee, February 21-25, and to Chattanooga, Tennessee and Dalton, Georgia, February 27-28. Attached to 1st Brigade, 2nd Separate Division, District of the Etowah, Dept. of the Cumberland, to July, 1865. Dept. of Georgia to January, 1866. Mustered out January 20, 1866. Moved to Springfield, Illinois, January 23-31. Discharged February 8, 1866.


 * 148th Regiment, Illinois Infantry Organized at Camp Butler, Illinois, and mustered in February 21, 1865. Mustered out at Nashville, Tennessee, September 5, 1865.


 * 149th Regiment, Illinois Infantry (1 year, 1865) Organized at Camp Butler, Illinois, and mustered in for 1 year February 11, 1865. Mustered out January 27, 1866.


 * 150th Regiment, Illinois Infantry (1 year, 1865) Organized at Camp Butler, Illinois, and mustered in for 1 year's service February 14, 1865. Mustered out January 16, 1866.


 * 151st Regiment, Illinois Infantry (1 year, 1865) Organized at Quincy, Illinois, and mustered in for 1 year's service February 23, 1865. Moved to Columbus, Ga., July 28-31, and duty there until January, 1866. Mustered out January 24, 1866. Discharged February 8, 1866.


 * 152nd Regiment, Illinois Infantry (1 year, 1865) Organized at Camp Butler, Illinois, and mustered in for 1 year February 18, 1865. Moved to Memphis, Tennessee, and duty there until September. Mustered out September 9, 1865.


 * 153rd Regiment, Illinois Infantry (1 year, 1865) Organized at Camp Fry, Chicago, Illinois, and mustered in for 1 year February 27, 1865. Moved to Memphis, Tennessee, and duty there until September. Mustered out September 9, 1865.


 * 154th Regiment, Illinois Infantry Organized at Camp Butler and mustered in February 21, 1865. Moved to Tullahoma, Tennessee., May 13-15; thence to Nashville June 11 and Garrison duty there until September. Mustered out September 18, 1865.


 * 155th Regiment, Illinois Infantry Organized at Camp Butler and mustered in February 28, 1865. SERVICE.-Guard Block Houses on Nashville camp; Chattanooga R. R. by Detachments from Nashville to Duck River until September. Mustered out September 4, 1865.


 * 156th Regiment, Illinois Infantry Organized February 16, 1865. Moved to Nashville, Tennessee, and attached to 3rd Brigade, 2nd Separate Division, District of the Etowah, Department of the Cumberland. SERVICE.-Engaged in guarding R.R. and Post duty in Department of the Cumberland until September. Mustered out September 20, 1865.


 * Alton Battalion, Illinois Infantry (100 days, 1864) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * Barker's Company, McClellan Dragoons, Illinois Cavalry Organized at Chicago, Illinois., April 19, 1861.


 * Bridges' Battery, Illinois Light Artillery Authorized January 1, 1863, and organized at Nashville, Tennessee, January 14, 1863, from Company "G," 19th Illinois Infantry. Company "G," 19th Illinois Infantry, organized at Chicago, Illinois, and mustered in June 17, 1861. Transferred to 1st Regiment Illinois Light Artillery as Battery "B," December 21, 1864, which see.


 * Chicago Board of Trade Battery, Illinois Light Artillery Organized at Chicago, Illinois, and mustered in August 1, 1862. Moved to Nashville, Tennessee, thence to Chicago, Illinois, June 23-27. Mustered out June 30, 1865.


 * Chicago Mercantile Battery, Illinois Light Artillery Organized at Chicago, Illinois, and mustered in August 29, 1862. At New Orleans, Louisiana, until June, then ordered home for muster out. Mustered out at Chicago, Illinois, July 10, 1865.


 * Cogswell's Independent Battery, Illinois Light Artillery Organized at Ottawa, Illinois, and mustered in November 12, 1861, as Company "A" Artillery, 53rd Illinois Infantry. March to Montgomery April 13-25, and duty there until July. Mustered out August 14, 1865.


 * Elgin Battery (5th Independent), Illinois Light Artillery Organized at Elgin, Illinois, and mustered in November 15, 1862. Surrender of Johnston and his army. Duty in Dept. of North Carolina until July. Mustered out July 18, 1865.


 * Evans' Independent Company, Illinois Cavalry (Egyptian Guards) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * Henshaw's Independent Battery, Illinois Light Artillery Organized at Ottawa, Illinois, and mustered in December 3, 1862. Garrison duty at Loudon, Tennessee, and other points in District of East Tennessee until July, 1865. Mustered out July 18, 1865.


 * Kowald's Independent Company, Illinois Infantry (3 months, 1861) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * McClellan Dragoons, Squadron, Illinois Cavalry Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * Perce's Company, Illinois State Militia Infantry (30 days, 1862) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit


 * Smith's Battery A, Chicago, Illinois Light Artillery Entered State service for three months April 17, 1861. Duty in District of Cairo, Illinois, until July. Mustered out July 16, 1861


 * Sturges' Rifles, Independent Company, Illinois Infantry Organized at Chicago, Illinois, April -, and mustered in May 6, 1861. Maryland Campaign, Battle of Antietam, Maryland, and movement to Falmouth, Virginia. Mustered out November 25, 1862.


 * Unassigned Illinois (Colored) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * Unassigned Illinois Volunteers "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.


 * Vaughn's Independent Battery, Illinois Light Artillery Organized at Springfield, Illinois, and mustered in August 21, 1862. Duty at Little Rock until June, 1865. Ordered to Springfield, Illinois, June 25, and mustered out June 30, 1865.


 * Walker's Independent Company, Illinois Infantry (3 months, 1861) "Compendium of the War of the Rebellion" by Frederick H. Dyer contains no history for this unit.

Service Records
At the Family History Library you may use indexes to federal service and pension records of Union Army soldiers. The pension indexes are cited in United States Civil War, 1861 to 1865. The index to the service records is:

United States. Adjutant General’s Office. Index to Compiled Service Records of Volunteer Union Soldiers Who Served in Organizations From the State of Illinois. National Archives Microfilm Publications, M0539. Washington, D.C.: National Archives, 1964. (Family History Library films –721) The original federal service records and pensions are available only at the National Archives.

See also volumes 1–8 of the Report of the Adjutant General of the State of Illinois, which is described earlier in this section under the subheading entitled "Records Covering More than One War."

Identifying Military Units
Relatives and neighbors may have been in different military units even though they enlisted from the same county. A source that tells which companies were raised from each county is:

Illinois Military Units in the Civil War. Springfield, Illinois: Civil War Centennial Commission of Illinois, 1962. (Family History Library book ; fiche ). The first section is arranged by county. The rest of the book is arranged by the name of the military unit, naming the counties where each company was raised.

Navy
Illinois men who served in the Navy during the war are identified in:

Roster of Men From Illinois Who Served in the United States Navy During the War of the Rebellion, 1861–1866. Salt Lake City, Utah: Genealogical Society of Utah, 1974, 1975. (Family History Library film, item 2 [index], and , item1 [roster of men]).

Militia
Muster Rolls, Militia Lists and Military Censuses. The Illinois State Archives has a considerable collection of original muster rolls, militia lists, and military censuses for the Civil War (Record Series 301.29). Militia lists were of two types: volunteer militias and lists of males subject to military service. Volunteer lists include the each member’s name, residence, age, birthplace, occupation, and date and term of enlistment in the militia. During the war, entire units of volunteer militias were called into service, although some members enlisted individually.

Militia lists of men between the ages of 18 and 45 who were subject to military service were created by Illinois county assessors from 1861 through 1863 as a form of draft registration. These lists usually contain only the names and not their ages. Many of those listed may not have actually served.

Militia lists of both types are in:

Illinois. Assessors. Militia Rolls, 1862–1863. Salt Lake City, Utah: Genealogical Society of Utah, 1977. (Family History Library films –24). These are arranged by county and town and list the names of men in rough alphabetical order.

The military census of 1862 taken by the federal government is also at the Illinois State Archives and lists men subject to military service. It gives each person’s name, age, birthplace, and occupation, and remarks about military assignments or exemptions. This collection often includes lists of volunteers and enlistment certificates.

Pension Records
Civil War Pension Index Cards - A free Internet index to pension applications of veterans who served in the US Army between 1861-1917 is available on FamilySearch Record Search. Each card gives the soldier’s name, application and certificate numbers, state of enlistment, and might include rank and death information. Other wars, of that time period, may be included.

Regimental Histories
The Illinois State Historical Library has a sizable collection of regimental histories. Two bibliographies published in 1994 are:

Tubbs, William B., comp. ''A Bibliography of Illinois Civil War Regimental Sources in the Illinois State Historical Library. Part I, Published and Printed Sources''. Illinois Historical Journal. (Springfield, Illinois: Illinois State Historical Society) vol. 87, no.3 (Spring 1994): 185–232. (Family History Library book ). This is arranged by the name of the military unit and cites unit histories, reunion literature, and other published materials.

Part II, Manuscripts. Volume 87, no.4 (Winter 1994): 277–324. Manuscripts cited include such items as letters, diaries, personal papers of regimental officers and official correspondence.

Biographies
Biographical data on Union officers from Illinois are in:

Wilson, James Grant. Biographical Sketches of Illinois Officers Engaged in the War Against the Rebellion of 1861. Chicago, Illinois: J. Barnet, 1862. (Family History Library book ; fiche [set of 5]).

Confederate Prisoners
Confederate prisoners were held in Illinois at Camp Douglas, Camp Butler, Rock Island, and Alton. Lists of both Union and Confederate soldiers buried at various camps are at the Illinois State Archives, Record Group 301.61. Some published records can be found in the Family History Library Catalog by using a Place Search under:

ILLINOIS, MADISON, ALTON- MILITARY RECORDS

ILLINOIS, ROCK ISLAND, ROCK ISLAND- MILITARY RECORDS

Veterans Organizations
By 1890, about 40 percent of the Civil War veterans were members of the Grand Army of the Republic (GAR). The descriptive books of each GAR post usually indicate the member’s name, age, rank, birthplace, residence, occupation, and enlistment and discharge information. A manuscript of members of GAR posts for the Department of Illinois, 1880 to 1930, and of other veterans organizations are at the Illinois State Historical Library. See the "Archives and Libraries" section for the address. Scattered records may be found in various libraries and archives throughout Illinois. Many GAR posts are identified in:

Hutchison, Florence. 800 Posts of the Grand Army of the Republic, Department of Illinois. Salt Lake City, Utah: Genealogical Society of Utah, 1978. (Family History Library film, item 6). This is a microfilm of an original typescript (10 leaves) written in 1974. This tells where each post was located.