Ohio - Union
Cavalry
| 1st Regiment Cavalry | 2nd Regiment Cavalry | 3rd Regiment Cavalry |
| 4th Regiment Cavalry | 5th Regiment Cavalry | 6th Regiment Cavalry |
| 7th Regiment Cavalry (River Regiment) | 8th Regiment Cavalry | 9th Regiment Cavalry |
| 10th Regiment Cavalry | 11th Regiment Cavalry | 12th Regiment Cavalry |
| 13th Regiment Cavalry | 1st Independent Battalion Cavalry | 2nd Independent Battalion Cavalry |
| 3rd Independent Battalion Cavalry | 4th Independent Battalion Cavalry | 5th Independent Battalion Cavalry |
| McLaughlin's Independent Squadron Cavalry | Burdsell's Independent Company Cavalry | George's Independent Company Cavalry |
| Harlan Light Cavalry | Ironton Independent Company Cavalry | Union Light Guard |
| 3rd Independent Company Cavalry | 4th Independent Company Cavalry | 5th Independent Company Cavalry |
| 6th Independent Company Cavalry |
Artillery
| 1st Regiment Heavy Artillery | 2nd Regiment Heavy Artillery | Barnett's 1st Light Artillery |
| Cotter's Ind. Battery Light Artillery | Paulson's Ind. Battery Light Artillery | Williams' Ind. Battery Light Artillery |
| 1st Regiment Light Artillery, Battery "A" | 1st Regiment Light Artillery, Battery "B" | 1st Regiment Light Artillery, Battery "C" |
| 1st Regiment Light Artillery, Battery "D" | 1st Regiment Light Artillery, Battery "E" | 1st Regiment Light Artillery, Battery "F" |
| 1st Regiment Light Artillery, Battery "G" | 1st Regiment Light Artillery, Battery "H" | 1st Regiment Light Artillery, Battery "I" |
| 1st Regiment Light Artillery, Battery "K" | 1st Regiment Light Artillery, Battery "L" | 1st Regiment Light Artillery, Battery "M" |
| 1st Independent Battery Light Artillery | 2nd Independent Battery Light Artillery | 2nd Ind. Battery Light Artillery (National Guard) |
| 3rd Independent Battery Light Artillery | 4th Independent Battery Light Artillery | 5th Independent Battery Light Artillery |
| 6th Independent Battery Light Artillery | 7th Independent Battery Light Artillery | 8th Independent Battery Light Artillery |
| 8th Ind. Battery Light Artillery (National Guard) | 9th Independent Battery Light Artillery | 10th Independent Battery Light Artillery |
| 11th Independent Battery Light Artillery | 12th Independent Battery Light Artillery | 13th Independent Battery Light Artillery |
| 14th Independent Battery Light Artillery | 15th Independent Battery Light Artillery | 16th Independent Battery Light Artillery |
| 17th Independent Battery Light Artillery | 18th Independent Battery Light Artillery | 19th Independent Battery Light Artillery |
| 20th Independent Battery Light Artillery | 21st Independent Battery Light Artillery | 22nd Independent Battery Light Artillery |
| 23rd Independent Battery Light Artillery | 24th Independent Battery Light Artillery | 25th Independent Battery Light Artillery |
| 26th Independent Battery Light Artillery |
Infantry
| 1st Independent Company Sharpshooters | 2nd Independent Company Sharpshooters | 3rd Independent Company Sharpshooters |
| 4th Independent Company Sharpshooters | 5th Independent Company Sharpshooters | 6th Independent Company Sharpshooters |
| 7th Independent Company Sharpshooters | 8th Independent Company Sharpshooters | 9th Independent Company Sharpshooters |
| 10th Independent Company Sharpshooters | 1st Regiment Infantry (3 months) | 1st Regiment Infantry (3 years) |
| 2nd Regiment Infantry (3 months) | 2nd Regiment Infantry (3 years) | 3rd Regiment Infantry (3 months) |
| 3rd Regiment Infantry (3 years) | 4th Regiment Infantry (3 months) | 4th Regiment Infantry (3 years) |
| 5th Regiment Infantry (3 months) | 5th Regiment Infantry (3 years) | 6th Regiment Infantry (3 months) |
| 6th Regiment Infantry (3 years) | 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 (3 months) | 13th Regiment Infantry (3 years) |
| 14th Regiment Infantry (3 months) | 14th Regiment Infantry (3 years) | 15th Regiment Infantry (3 months) |
| 15th Regiment Infantry (3 years) | 16th Regiment Infantry (3 months) | 16th Regiment Infantry (3 years) |
| 17th Regiment Infantry (3 months) | 17th Regiment Infantry (3 years) | 18th Regiment Infantry (3 months) |
| 18th Regiment Infantry (3 years) | 18th Regiment Infantry (Veteran) | 19th Regiment Infantry (3 months) |
| 19th Regiment Infantry (3 years) | 20th Regiment Infantry (3 months) | 20th Regiment Infantry (3 years) |
| 21st Regiment Infantry (3 months) | 21st Regiment Infantry (3 years) | 22nd Regiment Infantry (3 months) |
| 22nd Regiment Infantry (3 years) | 23rd Regiment Infantry | 24th Regiment Infantry |
| 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 | 38th Regiment Infantry | 39th Regiment Infantry |
| 40th Regiment Infantry | 41st Regiment Infantry | 42nd Regiment Infantry |
| 43rd Regiment Infantry | 44th Regiment Infantry | 45th Regiment Infantry |
| 46th Regiment Infantry | 47th Regiment Infantry | 48th Regiment Infantry |
| 48th Ohio Battalion 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 | 60th Regiment Infantry (Reorganized) | 61st Regiment Infantry |
| 62nd Regiment Infantry | 63rd Regiment Infantry | 64th Regiment Infantry |
| 65th Regiment Infantry | 66th Regiment Infantry | 67th Regiment Infantry |
| 68th Regiment Infantry | 69th Regiment Infantry | 70th Regiment Infantry |
| 71st Regiment Infantry | 72nd Regiment Infantry | 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 |
| 83rd Regiment Infantry | 84th Regiment Infantry | 85th Regiment Infantry |
| 86th Regiment Infantry | 86th Regiment Infantry (Reorganized) | 87th Regiment Infantry |
| 88th Regiment Infantry | 89th Regiment Infantry | 90th Regiment Infantry |
| 91st Regiment Infantry | 92nd Regiment Infantry | 93rd Regiment Infantry |
| 94th Regiment Infantry | 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 (Colored) | 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 |
| 157th Regiment Infantry | 158th Regiment Infantry | 159th Regiment Infantry |
| 160th Regiment Infantry | 161st Regiment Infantry | 162nd Regiment Infantry |
| 163rd Regiment Infantry | 164th Regiment Infantry | 165th Regiment Infantry |
| 166th Regiment Infantry | 167th Regiment Infantry | 168th Regiment Infantry |
| 169th Regiment Infantry | 170th Regiment Infantry | 171st Regiment Infantry |
| 172nd Regiment Infantry | 173rd Regiment Infantry | 174th Regiment Infantry |
| 175th Regiment Infantry | 176th Regiment Infantry | 177th Regiment Infantry |
| 178th Regiment Infantry | 179th Regiment Infantry | 180th Regiment Infantry |
| 181st Regiment Infantry | 182nd Regiment Infantry | 183rd Regiment Infantry |
| 184th Regiment Infantry | 185th Regiment Infantry | 186th Regiment Infantry |
| 187th Regiment Infantry | 188th Regiment Infantry | 189th Regiment Infantry |
| 190th Regiment Infantry | 191st Regiment Infantry | 192nd Regiment Infantry |
| 193rd Regiment Infantry | 194th Regiment Infantry | 195th Regiment Infantry |
| 196th Regiment Infantry | 197th Regiment Infantry | Hoffman's Battalion Infantry |
| Bard's Independent Company Infantry | Dennison Guard | Departmental Corps |
| Trumbull Guard | Wallace Guard |