Artillery Units
- 1st Light Artillery, Battery A
- 1st Light Artillery, Battery B
- 1st Light Artillery, Battery C ("Houghtailing's")
- 1st Light Artillery, Battery D
- 1st Light Artillery, Battery E ("Waterhouse's")
- 1st Light Artillery, Battery F
- 1st Light Artillery, Battery G
- 1st Light Artillery, Battery H
- 1st Light Artillery, Battery I
- 1st Light Artillery, Battery K
- 1st Light Artillery, Battery L
- 1st Light Artillery, Battery M
- 2nd Light Artillery, Battery A
- 2nd Light Artillery, Battery B
- 2nd Light Artillery, Battery C
- 2nd Light Artillery, Battery D
- 2nd Light Artillery, Battery E
- 2nd Light Artillery, Battery F
- 2nd Light Artillery, Battery G
- 2nd Light Artillery, Battery H
- 2nd Light Artillery, Battery I
- 2nd Light Artillery, Battery K
- 2nd Light Artillery, Battery L
- 2nd Light Artillery, Battery M
- Bridges' Independent Battery Light Artillery
- Busteed's Independent Battery Light Artillery
- Chapman's Peoria Independent Battery Light Artillery
- Chicago Board Trade Battery Light Artillery
- Chicago Light Artillery
- Chicago Mercantile Battery Light Artillery
- Cogswell's Independent Battery Light Artillery
- Colvin's Independent Battery Light Artillery
- Cooley's Independent Battery Light Artillery (See Chicago Mercantile Battery Light Artillery)
- Renwick's Elgin Independent Battery Light Artillery (See Renwick's 5th Independent Battery)
- Henshaw's Independent Battery Light Artillery
- Light Artillery Company
- Lockport Artillery Company
- Smith's Battery Chicago Light Artillery
- Springfield Independent Battery Light Artillery ("Vaughan's")
- Stokes' Independent Battery Light Artillery (See Chicago Board of Trade Battery Light Artillery)
- Vaughan's Independent Battery Light Artillery (See Springfield Battery Light Artillery)
- 1st Light Artillery, Battery B
Cavalry Units
- 1st Regiment Cavalry
- 2nd Regiment Cavalry
- 3rd Regiment Cavalry
- 4th Regiment Cavalry
- 5th Regiment Cavalry
- 6th Regiment Cavalry
- 7th Regiment Cavalry
- 8th Regiment Cavalry
- 9th Regiment Cavalry
- 10th Regiment Cavalry
- 11th Regiment Cavalry
- 12th Regiment Cavalry
- 13th Regiment Cavalry
- 14th Regiment Cavalry
- 15th Regiment Cavalry
- 16th Regiment Cavalry
- 17th Regiment Cavalry
- Stewart's Cavalry Battalion
- Barker's Dragoons Battalion
- Carmichael's Independent Cavalry Company
- Dodson's Kane County Independent Cavalry Company
- Dollins' Independent Cavalry Company
- Ford's Independent Cavalry Company
- Gilbert's Independent Cavalry Company
- Hutchin's Independent Cavalry Company
- Jenk's Independent Cavalry Company
- Marx's Independent Cavalry Company
- McClellan's Dragoons
- McClernand's Body Guard
- Naughton's Irish Dragoons
- O'Harnett's Independent Cavalry Company
- Schaumbeck's Independent Cavalry Company
- Sherer's Independent Cavalry Company
- Smith's Independent Cavalry Company
- Stewart's Independent Cavalry Company
- Thielman's Independent Cavalry Battalion
- Thielman's Independent Cavalry Company
- 2nd Regiment Cavalry
Infantry Units
- 7th Regiment Infantry (3 months)
- 7th Regiment Infantry (3 years)
- 8th Regiment Infantry (3 months)
- 8th Regiment Infantry (3 years)
- 9th Regiment Infantry (3 months)
- 9th Regiment Infantry (3 years)
- 10th Regiment Infantry (3 months)
- 10th Regiment Infantry (3 years)
- 11th Regiment Infantry (3 months)
- 11th Regiment Infantry (3 years)
- 12th Regiment Infantry (3 months)
- 12th Regiment Infantry (3 years)
- 13th Regiment Infantry
- 14th Regiment Infantry
- 15th Regiment Infantry
- 16th Regiment Infantry
- 17th Regiment Infantry
- 18th Regiment Infantry
- 19th Regiment Infantry
- 20th Regiment Infantry
- 21st Regiment Infantry
- 22nd Regiment Infantry
- 23rd Regiment Infantry ("Irish Brigade")
- 24th Regiment Infantry ("1st Hecker Regiment")
- 25th Regiment Infantry
- 26th Regiment Infantry
- 27th Regiment Infantry
- 28th Regiment Infantry
- 29th Regiment Infantry
- 30th Regiment Infantry
- 31st Regiment Infantry
- 32nd Regiment Infantry
- 33rd Regiment Infantry
- 34th Regiment Infantry
- 35th Regiment Infantry
- 36th Regiment Infantry
- 37th Regiment Infantry ("Fremont Rifles")
- 38th Regiment Infantry
- 39th Regiment Infantry ("Yates Phalanx")
- 40th Regiment Infantry
- 41st Regiment Infantry
- 42nd Regiment Infantry
- 43rd Regiment Infantry
- 44th Regiment Infantry
- 45th Regiment Infantry ("Washburn Lead Mine Regiment")
- 46th Regiment Infantry
- 47th Regiment Infantry
- 48th Regiment Infantry
- 49th Regiment Infantry
- 50th Regiment Infantry
- 51st Regiment Infantry
- 52nd Regiment Infantry
- 53rd Regiment Infantry
- 54th Regiment Infantry
- 55th Regiment Infantry
- 56th Regiment Infantry
- 57th Regiment Infantry
- 58th Regiment Infantry
- 59th Regiment Infantry
- 60th Regiment Infantry
- 61st Regiment Infantry
- 62nd Regiment Infantry
- 63rd Regiment Infantry
- 64th Regiment Infantry ("Yates' Sharpshooters")
- 65th Regiment Infantry ("Scotch Regiment")
- 66th Regiment Infantry
- 67th Regiment Infantry
- 68th Regiment Infantry
- 69th Regiment Infantry
- 70th Regiment Infantry
- 71st Regiment Infantry
- 72nd Regiment Infantry ("Chicago Board of Trade Regiment")
- 73rd Regiment Infantry
- 74th Regiment Infantry
- 75th Regiment Infantry
- 76th Regiment Infantry
- 77th Regiment Infantry
- 78th Regiment Infantry
- 79th Regiment Infantry
- 80th Regiment Infantry
- 81st Regiment Infantry
- 82nd Regiment Infantry ("2nd Hecker Regiment")
- 83rd Regiment Infantry
- 84th Regiment Infantry
- 85th Regiment Infantry
- 86th Regiment Infantry
- 87th Regiment Infantry
- 88th Regiment Infantry ("2nd Board of Trade Regiment")
- 89th Regiment Infantry ("Railroad Regiment")
- 90th Regiment Infantry
- 91st Regiment Infantry
- 92nd Regiment Infantry
- 93rd Regiment Infantry
- 94th Regiment Infantry ("The McLean Regiment")
- 95th Regiment Infantry
- 96th Regiment Infantry
- 97th Regiment Infantry
- 98th Regiment Infantry
- 99th Regiment Infantry
- 100th Regiment Infantry
- 101st Regiment Infantry
- 102nd Regiment Infantry
- 103rd Regiment Infantry
- 104th Regiment Infantry
- 105th Regiment Infantry
- 106th Regiment Infantry
- 107th Regiment Infantry
- 108th Regiment Infantry
- 109th Regiment Infantry
- 110th Regiment Infantry
- 111th Regiment Infantry
- 112th Regiment Infantry
- 113th Regiment Infantry
- 114th Regiment Infantry
- 115th Regiment Infantry
- 116th Regiment Infantry
- 117th Regiment Infantry
- 118th Regiment Infantry
- 119th Regiment Infantry
- 120th Regiment Infantry
- 121st Regiment Infantry
- 122nd Regiment Infantry
- 123rd Regiment Infantry
- 124th Regiment Infantry
- 125th Regiment Infantry
- 126th Regiment Infantry
- 127th Regiment Infantry
- 128th Regiment Infantry
- 129th Regiment Infantry
- 130th Regiment Infantry
- 131st Regiment Infantry
- 132nd Regiment Infantry
- 133rd Regiment Infantry
- 134th Regiment Infantry
- 135th Regiment Infantry
- 136th Regiment Infantry
- 137th Regiment Infantry
- 138th Regiment Infantry
- 139th Regiment Infantry
- 140th Regiment Infantry
- 141st Regiment Infantry
- 142nd Regiment Infantry
- 143rd Regiment Infantry
- 144th Regiment Infantry
- 145th Regiment Infantry
- 146th Regiment Infantry
- 147th Regiment Infantry
- 148th Regiment Infantry
- 149th Regiment Infantry
- 150th Regiment Infantry
- 151st Regiment Infantry
- 152nd Regiment Infantry
- 153rd Regiment Infantry
- 154th Regiment Infantry
- 155th Regiment Infantry
- 156th Regiment Infantry
- Chicago Light Artillery Company
- Chicago Zouaves--Company A
- Chicago Zouaves--Company B
- Chicago Light Infantry Company
- Cairo Sandwich Company
- Houghtailing's Ottawa Company
- Lincoln Rifles
- Sturgis' Rifles
- Turner Union Cadets
- 7th Regiment Infantry (3 years)
Source: A Compendium of the War of the Rebellion Frederick H. Dyer, 1908.