This roster includes the known officers and enlisted men of the 66th Indiana Infantry, organized by Field & Staff and Companies A through K. Information is drawn from 19th-century state adjutant general reports, the Official Records, and verified regimental histories.
Tip: To search for a soldier’s name on this page, use Ctrl + F (Windows) or Command + F (Mac).
For an overview of this regiment’s organization, service, engagements, and casualties, see the regiment summary page.
Research This Regiment
If you’re researching ancestors in the 66th Indiana Infantry, these resources may provide additional historical detail, including regimental histories and Civil War reference works.
Field & Staff
- Colonel –
- Lieutenant Colonel –
- Major –
- Adjutant –
- Quartermaster –
- Surgeon –
- Assistant Surgeon –
- Chaplain –
Company A
Company B
Company C
Company D
Company E
Company F
Company G
Company H
Company I
Company K
Non-Commissioned Staff
- Sergeant Major –
- Quartermaster Sergeant –
- Commissary Sergeant –
- Hospital Steward –
- Principal Musician –
Unassigned Recruits
Some recruits enlisted late in the regiment’s service and may not be assigned to a specific company in available records.
Consolidations or Transfers
Upon muster-out of the regiment in June 1865, remaining recruits were transferred to the 59th Indiana Infantry and served with that regiment until its muster-out.
Sources & Notes
- Official Records of the War of the Rebellion, Series I, relevant volumes and parts.
- State Adjutant General Report for Indiana (various years, volumes, and pages as available).
- Dyer’s Compendium.
- Fox, “Regimental Losses in the American Civil War.”
- The Union Army, Federal Publishing Company, 1908, Volume 3.