List of Illinois Civil War units

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 Volunteer Infantry Regiment (3 Months)
 * 7th Illinois Volunteer Infantry Regiment (3 Years)
 * 8th Illinois Volunteer Infantry Regiment (3 Months)
 * 8th Illinois Volunteer Infantry Regiment (3 Years)
 * 9th Illinois Volunteer Infantry Regiment (3 Months)
 * 9th Illinois Volunteer Infantry Regiment (3 Years)
 * 9th Illinois Volunteer Mounted Infantry Regiment
 * 10th Illinois Volunteer Infantry Regiment (3 Month)
 * 10th Illinois Volunteer Infantry Regiment (3 Year)
 * 11th Illinois Volunteer Infantry Regiment (3 Month)
 * 11th Illinois Volunteer Infantry Regiment (3 Year)
 * 12th Illinois Volunteer Infantry Regiment (3 Month) - The (First) Scotch Regiment
 * 12th Illinois Volunteer Infantry Regiment (3 Year) - The (First) Scotch Regiment
 * 13th Illinois Volunteer Infantry Regiment
 * 14th Illinois Volunteer Infantry Regiment
 * 15th Illinois Volunteer Infantry Regiment
 * 16th Illinois Volunteer Infantry Regiment
 * 17th Illinois Volunteer Infantry Regiment
 * 18th Illinois Volunteer Infantry Regiment
 * 19th Illinois Volunteer Infantry Regiment
 * 20th Illinois Volunteer Infantry Regiment
 * 21st Illinois Volunteer Infantry Regiment
 * 22nd Illinois Volunteer Infantry Regiment
 * 23rd Illinois Volunteer Infantry Regiment - The Irish 'Brigade' aka "The First Irish"
 * 24th Illinois Volunteer Infantry Regiment - (First) Hecker Regiment
 * 25th Illinois Volunteer Infantry Regiment
 * 26th Illinois Volunteer Infantry Regiment
 * 27th Illinois Volunteer Infantry Regiment
 * 28th Illinois Volunteer Infantry Regiment
 * 29th Illinois Volunteer Infantry Regiment
 * 29th Regiment, United States Colored Infantry
 * 30th Illinois Volunteer Infantry Regiment
 * 31st Illinois Volunteer Infantry Regiment
 * 32nd Illinois Volunteer Infantry Regiment
 * 33rd Illinois Volunteer Infantry Regiment - The Normal Regiment
 * 34th Illinois Volunteer Infantry Regiment - The Rock River Rifles
 * 35th Illinois Volunteer Infantry Regiment
 * 36th Illinois Volunteer Infantry Regiment - The Fox River Regiment
 * 37th Illinois Volunteer Infantry Regiment - The Fremont Rifles or Illinois Greyhounds
 * 38th Illinois Volunteer Infantry Regiment
 * 39th Illinois Volunteer Infantry Regiment - Yates' Phalanx
 * 40th Illinois Volunteer Infantry Regiment
 * 41st Illinois Volunteer Infantry Regiment
 * 42nd Illinois Volunteer Infantry Regiment - First Douglas Regt
 * 43rd Illinois Volunteer Infantry Regiment - Koerner Regiment
 * 44th Illinois Volunteer Infantry Regiment - Northwestern Rifles
 * 45th Illinois Volunteer Infantry Regiment - Washburn Lead Mine Regiment
 * 46th Illinois Volunteer Infantry Regiment
 * 47th Illinois Volunteer Infantry Regiment
 * 48th Illinois Volunteer Infantry Regiment
 * 49th Illinois Volunteer Infantry Regiment
 * 50th Illinois Volunteer Infantry Regiment - Blind Half-Hundred
 * 51st Illinois Volunteer Infantry Regiment - Chicago Legion
 * 52nd Illinois Volunteer Infantry Regiment
 * 53rd Illinois Volunteer Infantry Regiment
 * 54th Illinois Volunteer Infantry Regiment
 * 55th Illinois Volunteer Infantry Regiment - Canton Rifles
 * 56th Illinois Volunteer Infantry Regiment
 * 57th Illinois Volunteer Infantry Regiment - National Guards
 * 58th Illinois Volunteer Infantry Regiment - Lyon Color Guard
 * 59th Illinois Volunteer Infantry Regiment (Formerly the 9th Missouri Volunteers)
 * 60th Illinois Volunteer Infantry Regiment
 * 61st Illinois Volunteer Infantry Regiment
 * 62nd Illinois Volunteer Infantry Regiment
 * 63rd Illinois Volunteer Infantry Regiment
 * 64th Illinois Volunteer Infantry Regiment - Yates Sharpshooters
 * 65th Illinois Volunteer Infantry Regiment - The Highlanders, The Highland Regt, The 2nd Scotch Regiment
 * 66th Illinois Veteran Volunteer Infantry (Western Sharpshooters)
 * 67th Illinois Volunteer Infantry Regiment - 3 Month Regiment
 * 68th Illinois Volunteer Infantry Regiment - 3 Month Regiment
 * 69th Illinois Volunteer Infantry Regiment - 3 Month Regiment
 * 70th Illinois Volunteer Infantry Regiment - 3 Month Regiment
 * 71st Illinois Volunteer Infantry Regiment - 3 Month Regiment
 * 72nd Illinois Volunteer Infantry Regiment - 1st Chicago Board of Trade Regiment
 * 73rd Illinois Volunteer Infantry Regiment - Persimmon Regiment or Preacher's Regiment
 * 74th Illinois Volunteer Infantry Regiment
 * 75th Illinois Volunteer Infantry Regiment
 * 76th Illinois Volunteer Infantry Regiment
 * 77th Illinois Volunteer Infantry Regiment
 * 78th Illinois Volunteer Infantry Regiment
 * 79th Illinois Volunteer Infantry Regiment
 * 80th Illinois Volunteer Infantry Regiment
 * 81st Illinois Volunteer Infantry Regiment
 * 82nd Illinois Volunteer Infantry Regiment - Second Hecker 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 - 2nd Chicago Board of Trade Regiment
 * 89th Illinois Volunteer Infantry Regiment - The Railroad 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
 * 121st Illinois Volunteer Infantry Regiment
 * 122nd Illinois Volunteer Infantry Regiment
 * 123rd Illinois Volunteer Infantry Regiment
 * 124th Illinois Volunteer Infantry Regiment - Excelsiors or Excelsior 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 - 100 Day Regiment
 * 133rd Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 134th Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 135th Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 136th Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 137th Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 138th Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 139th Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 140th Illinois Volunteer Infantry Regiment - 100 Day Regiment - was reformed and served somewhat longer
 * 141st Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 142nd Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 143rd Illinois Volunteer Infantry Regiment - 100 Day Regiment
 * 144th Illinois Volunteer Infantry Regiment
 * 145th Illinois Volunteer Infantry Regiment - 100 Day 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 - Bracket's Regiment
 * 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 - German Guides
 * 14th Regiment Illinois Volunteer Cavalry
 * 15th Regiment Illinois Volunteer Cavalry
 * 16th Regiment Illinois Volunteer Cavalry
 * 17th Regiment Illinois Volunteer Cavalry


 * Stewart's Independent Cavalry Battalion
 * Thielman's Independent Cavalry Battalion
 * 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 Company
 * 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

 * Battery "A", 1st Regiment Illinois Volunteer Light Artillery
 * Battery "B", 1st Regiment Illinois Volunteer Light Artillery
 * Battery "C", 1st Regiment Illinois Volunteer Light Artillery (Houghtailing's)
 * Battery "D", 1st Regiment Illinois Volunteer Light Artillery
 * Battery "E", 1st Regiment Illinois Volunteer Light Artillery (Waterhouse's)
 * Battery "F", 1st Regiment Illinois Volunteer Light Artillery
 * Battery "G", 1st Regiment Illinois Volunteer Light Artillery
 * 1st Regiment Light Artillery, Battery "H"
 * 1st Regiment Light Artillery, Battery "I"
 * 1st Regiment Light Artillery, Battery "K"
 * 1st Regiment Light Artillery, Battery "K" (reorganized)
 * 1st Regiment Light Artillery, Battery "L"
 * 1st Regiment Light Artillery, Battery "M"
 * Battery "A", 2nd Regiment Illinois Volunteer Light Artillery
 * 2nd Regiment Light Artillery, Battery "B"
 * 2nd Regiment Light Artillery, Battery "C"
 * Battery "D", 2nd Regiment Illinois Volunteer Light Artillery
 * Battery "E", 2nd Regiment Illinois Volunteer Light Artillery
 * 2nd Regiment Light Artillery, Battery "F"
 * 2nd Regiment Light Artillery, Battery "G"
 * 2nd Regiment Light Artillery, Battery "H"
 * Battery "I", 2nd Regiment Illinois Volunteer Light Artillery
 * 2nd Regiment Light Artillery, Battery "K"
 * Battery "L", 2nd Regiment Illinois Volunteer Light Artillery
 * 2nd Regiment Light Artillery, Battery "M"
 * Bridges' Independent Battery Light Artillery
 * Busteed's Independent Battery Light Artillery
 * Chicago Board of Trade Independent Battery Light Artillery
 * Chapman's Peoria Independent Battery Light Artillery
 * Chicago Mercantile Independent Battery Light Artillery
 * Cogswell's Independent Battery Light Artillery
 * Colvin's Independent Battery Light Artillery
 * Cooley's Independent Battery Light Artillery
 * Renwick's Elgin Independent Battery Light Artillery
 * Henshaw's Independent Battery Light Artillery
 * Renwick's Independent Battery Light Artillery
 * Smith's Battery Chicago Light Artillery
 * Springfield Independent Battery Light Artillery (Vaughan's)
 * Stokes' Independent Battery Light Artillery
 * Vaughan's Independent Battery Light Artillery