Otterbein students and faculty served in a variety of Union units at the state and national level. Click on each unit name to view biographies of Otterbein soldiers.
| Units Served In | Regiments Served In |
Ohio Voluntary Cavalry: |
1st, 9th, 10th, 13th, 5th Battalion |
| Ohio Voluntary Infantry: | 3rd, 11th, 17th, 23rd, 32nd, 35th, 40th, 46th, 60th, 73rd, 74th, 76th, 80th, 81st, 86th, 88th, 90th, 93rd, 95th, 96th, 100th, 101st, 122nd, 126th, 129th, 133rd, 136th, 145th, 148th, 156th, 160th, 161st, 164th, 167th, 169th, 170th, 174th, 176th, 178th, 179th, 184th, 185th, 187th |
| U.S. Army Ordnance Corps |
|
| U.S. Infantry: | 15th, 18th |
| U.S. Navy |
|
| U.S. Colored Troops: |
5th, 70th |
| Pennsylvania Cavalry: |
15th, 21st |
| Pennsylvania Infantry: |
8th, 188th, 200th |
| Illinois Infantry: |
7th, 12th, 32nd, 66th, 77th |
| Minnesota Infantry: |
6th |
| Indiana Infantry: |
69th |
| Maryland Infantry: |
1st |
| Michigan Cavalry: |
9th |
| West Virginia Cavalry and State Guards: |
1st |
| Massachusetts Infantry: |
42nd |
| New York Voluntary Infantry |
|
| Iowa Voluntary Infantry: |
48th |
