The following list of Union Regiments was compiled by John Barden when he was employed with Tryon Palace Historic Sites and Gardens. Hyperlinks to online editions of Regimental Histories were added by staff members of the Kellenberger Room.
| Connecticut | Illinois | Indiana |
| Iowa | Kentucky | Maine |
| Maryland | Massachusetts | Michigan |
| Minnesota | Missouri | |
| Ohio | Pennsylvania | |
| Tennessee | Vermont | Wisconsin |