TheNameDBWar Records: O'Brien
Found 1,738 Civil War soldier records for surname "O'Brien" (Union: 1389, Confederacy: 349).
1,738 Results
| Name | State | Unit | Function |
|---|---|---|---|
| O'Brien, John | Illinois | 52nd Regiment, Illinois Infantry | Infantry |
| O'Brien, John | Illinois | 53rd Regiment, Illinois Infantry | Infantry |
| O'Brien, John | Illinois | 58th Regiment, Illinois Infantry | Infantry |
| O'Brien, John | Illinois | 85th Regiment, Illinois Infantry | Infantry |
| O'Brien, John | Illinois | 90th Regiment, Illinois Infantry | Infantry |
| O'Brien, John | Illinois | 107th Regiment, Illinois Infantry | Infantry |
| O'Brien, John | Illinois | 113th Regiment, Illinois Infantry | Infantry |
| O'Brien, John | Illinois | 117th Regiment, Illinois Infantry | Infantry |
| O'Brien, John | Ohio | 2nd Regiment, Ohio Cavalry | Cavalry |
| O'Brien, John | Ohio | 4th Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 4th Battalion, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 10th Regiment, Ohio Cavalry | Cavalry |
| O'Brien, John | Ohio | 10th Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 43rd Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 52nd Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 66th Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 71st Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 81st Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 108th Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Ohio | 123rd Regiment, Ohio Infantry | Infantry |
| O'Brien, John | Kansas | 1st Regiment, Kansas Infantry | Infantry |
| O'Brien, John | Missouri | 1st Regiment, Missouri Infantry (3 months 1861) | Infantry |
| O'Brien, John | Missouri | 3rd Regiment, Missouri Cavalry | Cavalry |
| O'Brien, John | Missouri | 5th Regiment, Missouri Infantry (3 months, 1861) | Infantry |
| O'Brien, John | Iowa | 7th Regiment, Iowa Infantry | Infantry |
| O'Brien, John | Connecticut | 1st Regiment, Connecticut Heavy Artillery | Artillery |
| O'Brien, John | New Hampshire | 14th Regiment, New Hampshire Infantry | Infantry |
| O'Brien, John | Texas | 2nd Regiment, Texas Cavalry (1 year, 1865) | Cavalry |
| O'Brien, John | Other Volunteers | 1st Regiment, US Veteran Volunteer Infantry | Infantry |
| O'Brien, John | Other Volunteers | 4th Regiment, US Veteran Volunteer Infantry | Infantry |
| O'Brien, John A. | Kansas | 8th Regiment, Kansas Infantry | Infantry |
| O'Brien, John B. | Other Volunteers | Unassigned US Volunteer Infantry | Infantry |
| O'Brien, John C. | Massachusetts | 59th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, John F. | Kansas | 1st Regiment, Kansas Infantry | Infantry |
| O'Brien, John F. | Missouri | 10th Regiment, Missouri Cavalry | Cavalry |
| O'Brien, John F. | Connecticut | 2nd Regiment, Connecticut Heavy Artillery | Artillery |
| O'Brien, John J. | Connecticut | 5th Regiment, Connecticut Infantry | Infantry |
| O'Brien, John J. | Minnesota | 4th Regiment, Minnesota Infantry | Infantry |
| O'Brien, John M. | Maryland | 3rd Regiment, Maryland Cavalry | Cavalry |
| O'Brien, John O. | Connecticut | 12th Regiment, Connecticut Infantry | Infantry |
| O'Brien, John P. | New Mexico Territory | 1st Regiment, New Mexico Infantry (Old) | Infantry |
| O'Brien, John T. | Kansas | 10th Regiment, Kansas Infantry | Infantry |
| O'Brien, John T. | Kansas | 1st Regiment, Kansas Infantry | Infantry |
| O'Brien, John W. | Union Regular Army | US Army (Regular Army) | |
| O'Brien, John W. | Kentucky | 2nd Regiment, Kentucky Cavalry | Cavalry |
| O'Brien, John W. | Ohio | 81st Regiment, Ohio Infantry | Infantry |
| O'Brien, Jonathan | Wisconsin | 25th Regiment, Wisconsin Infantry | Infantry |
| O'Brien, Joseph | Pennsylvania | 111th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Joseph | Veteran Reserve | Unassigned Veteran Reserve Corps | |
| O'Brien, Joseph | Union Regular Army | US Army (Regular Army) |
Search External Archives
Search for "O'Brien" on these official military record databases:
NPS Civil War Soldiers & Sailors →
The National Park Service database of Civil War soldiers and sailors. Search for "O'Brien" on the NPS site.
National Archives - Revolutionary War →
Revolutionary War military records from the National Archives, including pension and bounty land warrant files.
FamilySearch - Civil War Records →
Free access to Civil War records including service records, pension files, and draft registration cards.
Fold3 - Military Records →
Extensive collection of military records including Civil War, Revolutionary War, and other conflicts.
Ancestry - Military Records →
Search military records on Ancestry.com including Civil War service records, draft cards, and pension files.