Infantry units
In recognition of Illinois’ six regiments' service in the Mexican War, regimental numbers for infantry in the Civil War began at seven.
- 7th Illinois Infantry Regiment (3 Months)
- 7th Illinois Infantry Regiment
- 8th Illinois Infantry Regiment (3 Months)
- 8th Illinois Infantry Regiment (3 Years)
- 9th Illinois Infantry Regiment (3 Months)
- 9th Illinois Infantry Regiment (3 Years)
- 9th Illinois Infantry Regiment (Mounted)
- 10th Illinois Infantry Regiment (3 Month)
- 10th Illinois Infantry Regiment (3 Year)
- 11th Illinois Infantry Regiment
- 12th Illinois Infantry Regiment (3 Month)
- 12th Illinois Infantry Regiment (3 Year)
- 13th Illinois Infantry Regiment
- 14th Illinois Infantry Regiment
- 15th Illinois Infantry Regiment
- 16th Illinois Infantry Regiment
- 17th Illinois Infantry Regiment
- 18th Illinois Infantry Regiment
- 19th Illinois Infantry Regiment
- 20th Illinois Infantry Regiment
- 21st Illinois Infantry Regiment
- 22nd Illinois Infantry Regiment
- 23rd Illinois Infantry Regiment
- 24th Illinois Infantry Regiment
- 25th Illinois Infantry Regiment
- 26th Illinois Infantry Regiment
- 27th Illinois Infantry Regiment
- 28th Illinois Infantry Regiment
- 29th Illinois Infantry Regiment
- 29th Regiment, United States Colored Infantry
- 30th Illinois Infantry Regiment
- 31st Illinois Infantry Regiment
- 32nd Illinois Infantry Regiment
- 33rd Illinois Infantry Regiment
- 34th Illinois Infantry Regiment
- 35th Illinois Infantry Regiment
- 36th Illinois Infantry Regiment
- 37th Illinois Infantry Regiment
- 38th Illinois Infantry Regiment
- 39th Illinois Infantry Regiment
- 40th Illinois Infantry Regiment
- 41st Illinois Infantry Regiment
- 42nd Illinois Infantry Regiment
- 43rd Illinois Infantry Regiment
- 44th Illinois Infantry Regiment
- 45th Illinois Infantry Regiment
- 46th Illinois Infantry Regiment
- 47th Illinois Infantry Regiment
- 48th Illinois Infantry Regiment
- 49th Illinois Infantry Regiment
- 50th Illinois Infantry Regiment
- 51st Illinois Infantry Regiment
- 52nd Illinois Infantry Regiment
- 53rd Illinois Infantry Regiment
- 54th Illinois Infantry Regiment
- 55th Illinois Infantry Regiment
- 56th Illinois Infantry Regiment
- 57th Illinois Infantry Regiment
- 58th Illinois Infantry Regiment
- 59th Illinois Infantry Regiment
- 60th Illinois Infantry Regiment
- 61st Illinois Infantry Regiment
- 62nd Illinois Infantry Regiment
- 63rd Illinois Infantry Regiment
- 64th Illinois Infantry Regiment
- 65th Illinois Infantry Regiment
- 66th Illinois Infantry Regiment
- 67th Illinois Infantry Regiment
- 68th Illinois Infantry Regiment
- 69th Illinois Infantry Regiment
- 70th Illinois Infantry Regiment
- 71st Illinois Infantry Regiment
- 72nd Illinois Infantry Regiment
- 73rd Illinois Infantry Regiment
- 74th Illinois Infantry Regiment
- 75th Illinois Infantry Regiment
- 76th Illinois Infantry Regiment
- 77th Illinois Infantry Regiment
- 78th Illinois Infantry Regiment
- 79th Illinois Volunteer Infantry Regiment
- 80th Illinois Volunteer Infantry Regiment
- 81st Illinois Volunteer Infantry Regiment
- 82nd Illinois Volunteer Infantry Regiment
- 83rd Illinois Volunteer Infantry Regiment
- 84th Illinois Volunteer Infantry Regiment
- 85th Illinois Volunteer Infantry Regiment
- 86th Illinois Volunteer Infantry Regiment
- 87th Illinois Volunteer Infantry Regiment
- 88th Illinois Volunteer Infantry Regiment
- 89th Illinois Volunteer Infantry Regiment
- 90th Illinois Volunteer Infantry Regiment
- 91st Illinois Volunteer Infantry Regiment
- 92nd Illinois Volunteer Infantry Regiment
- 93rd Illinois Volunteer Infantry Regiment
- 94th Illinois Volunteer Infantry Regiment
- 95th Illinois Volunteer Infantry Regiment
- 96th Illinois Volunteer Infantry Regiment
- 97th Illinois Volunteer Infantry Regiment
- 98th Illinois Volunteer Infantry Regiment
- 99th Illinois Volunteer Infantry Regiment
- 100th Illinois Volunteer Infantry Regiment
- 101st Illinois Volunteer Infantry Regiment
- 102nd Illinois Volunteer Infantry Regiment
- 103rd Illinois Volunteer Infantry Regiment
- 104th Illinois Volunteer Infantry Regiment
- 105th Illinois Volunteer Infantry Regiment
- 106th Illinois Volunteer Infantry Regiment
- 107th Illinois Volunteer Infantry Regiment
- 108th Illinois Volunteer Infantry Regiment
- 109th Illinois Volunteer Infantry Regiment
- 110th Illinois Volunteer Infantry Regiment
- 111th Illinois Volunteer Infantry Regiment
- 112th Illinois Volunteer Infantry Regiment
- 113th Illinois Volunteer Infantry Regiment
- 114th Illinois Volunteer Infantry Regiment
- 115th Illinois Volunteer Infantry Regiment
- 116th Illinois Volunteer Infantry Regiment
- 117th Illinois Volunteer Infantry Regiment
- 118th Illinois Volunteer Infantry Regiment
- 119th Illinois Volunteer Infantry Regiment
- 120th Illinois Volunteer Infantry Regiment
- 122nd Illinois Volunteer Infantry Regiment
- 123rd Illinois Volunteer Infantry Regiment
- 124th Illinois Volunteer Infantry Regiment
- 125th Illinois Volunteer Infantry Regiment
- 126th Illinois Volunteer Infantry Regiment
- 127th Illinois Volunteer Infantry Regiment
- 128th Illinois Volunteer Infantry Regiment
- 129th Illinois Volunteer Infantry Regiment
- 130th Illinois Volunteer Infantry Regiment
- 131st Illinois Volunteer Infantry Regiment
- 132nd Illinois Volunteer Infantry Regiment
- 133rd Illinois Volunteer Infantry Regiment
- 134th Illinois Volunteer Infantry Regiment
- 135th Illinois Volunteer Infantry Regiment
- 136th Illinois Volunteer Infantry Regiment
- 137th Illinois Volunteer Infantry Regiment
- 138th Illinois Volunteer Infantry Regiment
- 139th Illinois Volunteer Infantry Regiment
- 140th Illinois Volunteer Infantry Regiment
- 141st Illinois Volunteer Infantry Regiment
- 142nd Illinois Volunteer Infantry Regiment
- 143rd Illinois Volunteer Infantry Regiment
- 144th Illinois Volunteer Infantry Regiment
- 145th Illinois Volunteer Infantry Regiment
- 146th Illinois Volunteer Infantry Regiment
- 147th Illinois Volunteer Infantry Regiment
- 148th Illinois Volunteer Infantry Regiment
- 149th Illinois Volunteer Infantry Regiment
- 150th Illinois Volunteer Infantry Regiment
- 151st Illinois Volunteer Infantry Regiment
- 152nd Illinois Volunteer Infantry Regiment
- 153rd Illinois Volunteer Infantry Regiment
- 154th Illinois Volunteer Infantry Regiment
- 155th Illinois Volunteer Infantry Regiment
- 156th Illinois Volunteer Infantry Regiment
- Sturgis Rifles
Cavalry units
- 1st Regiment Illinois Volunteer Cavalry
- 2nd Regiment Illinois Volunteer Cavalry
- 3rd Regiment Illinois Volunteer Cavalry
- 4th Regiment Illinois Volunteer Cavalry
- 5th Regiment Illinois Volunteer Cavalry
- 6th Regiment Illinois Volunteer Cavalry
- 7th Regiment Illinois Volunteer Cavalry
- 8th Regiment Illinois Volunteer Cavalry
- 9th Regiment Illinois Volunteer Cavalry
- 10th Regiment Illinois Volunteer Cavalry
- 11th Regiment Illinois Volunteer Cavalry
- 12th Regiment Illinois Volunteer Cavalry
- 13th Regiment Illinois Volunteer Cavalry
- 14th Regiment Illinois Volunteer Cavalry
- 15th Regiment Illinois Volunteer Cavalry
- 16th Regiment Illinois Volunteer Cavalry
- 17th Regiment Illinois Volunteer Cavalry
Named Units
- Barker's Dragoons
- Carmichael's Independent Cavalry Company
- Dollins' Independent Cavalry Company
- Ford's Independent Cavalry Company
- Gilbert's Independent Cavalry Company
- Hutchins' Independent Cavalry Company
- Jenks' Independent Cavalry Company
- Dodson's Kane County Independent Cavalry Company
- Marx's Independent Cavalry Company
- McClellan Dragoons
- McClernand's Body Guard
- Naughton's Irish Dragoons
- O'Harnett's Independent Cavalry Company
- Schambeck's Independent Cavalry Company
- Sherer's Independent Cavalry Company
- Stewart's Independent Cavalry Battalion
- Stewart's Independent Cavalry Company
- Thielman's Independent Cavalry Battalion
- Thielman's Independent Cavalry Company
Mounted infantry units
- 9th Illinois Volunteer Mounted Infantry Regiment
- 92nd Illinois Volunteer Mounted Infantry Regiment
- 98th Illinois Volunteer Mounted Infantry Regiment
- 123rd Illinois Volunteer Mounted Infantry Regiment
Artillery units
Named Units
- Bridges' Battery Illinois Light Artillery
- Chicago Board of Trade Independent Battery Light Artillery
- Chicago Mercantile Independent Battery Light Artillery
- Cogswell's Battery Illinois Light Artillery
- Colvin's Battery Illinois Light Artillery
- Renwick's Elgin Battery Illinois Light Artillery
- Henshaw's Battery Illinois Light Artillery
- Springfield Illinois Light Artillery (Vaughan's)
See also
References
Report of the Adjutant General of the State of Illinois. This series of books give an overview of all military units provided the State of Illinois and listing of rosters of each unit.