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, Thomas | Indiana | 16th Regiment, Indiana Infantry | Infantry |
| O'Brien, Thomas | Indiana | 43rd Regiment, Indiana Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 20th Regiment, Pennsylvania Cavalry | Cavalry |
| O'Brien, Thomas | Pennsylvania | 46th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 67th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 76th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 97th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 183rd Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | New Jersey | Volunteer Recruits, Hoboken, New Jersey | |
| O'Brien, Thomas | Illinois | 39th Regiment, Illinois Infantry | Infantry |
| O'Brien, Thomas | Illinois | 106th Regiment, Illinois Infantry | Infantry |
| O'Brien, Thomas | Illinois | 140th Regiment, Illinois Infantry (100 days, 1864) | Infantry |
| O'Brien, Thomas | Missouri | 1st Regiment, Missouri Engineers | Engineers |
| O'Brien, Thomas | Missouri | 1st Regiment, Missouri Light Artillery | Artillery |
| O'Brien, Thomas | Connecticut | 1st Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Connecticut | 3rd Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Connecticut | 6th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Connecticut | 9th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Connecticut | 11th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Connecticut | 15th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Connecticut | 17th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Connecticut | 20th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Connecticut | 27th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Thomas | Veteran Reserve | 13th Regiment, Veteran Reserve Corps | |
| O'Brien, Thomas | Veteran Reserve | 16th Regiment, Veteran Reserve Corps | |
| O'Brien, Thomas | Vermont | 1st Regiment, Vermont Cavalry | Cavalry |
| O'Brien, Thomas | Vermont | 6th Regiment, Vermont Infantry | Infantry |
| O'Brien, Thomas | Vermont | 10th Regiment, Vermont Infantry | Infantry |
| O'Brien, Thomas | Vermont | 17th Regiment, Vermont Infantry | Infantry |
| O'Brien, Thomas | Union Regular Army | 9th Regiment, US Infantry (Regular Army) | Infantry |
| O'Brien, Thomas | New Hampshire | 7th Regiment, New Hampshire Infantry | Infantry |
| O'Brien, Thomas | Maryland | 3rd Regiment, Maryland Infantry | Infantry |
| O'Brien, Thomas | Maryland | 4th Regiment, Maryland Infantry (New) | Infantry |
| O'Brien, Thomas | Wisconsin | 2nd Regiment, Wisconsin Cavalry | Cavalry |
| O'Brien, Thomas | Wisconsin | 49th Regiment, Wisconsin Infantry | Infantry |
| O'Brien, Thomas | Indiana | 148th Regiment, Indiana Infantry | Infantry |
| O'Brien, Thomas | Michigan | 8th Regiment, Michigan Cavalry | Cavalry |
| O'Brien, Thomas | Michigan | 10th Regiment, Michigan Cavalry | Cavalry |
| O'Brien, Thomas | Michigan | 11th Regiment, Michigan Cavalry | Cavalry |
| O'Brien, Thomas | Michigan | 14th Regiment, Michigan Infantry | Infantry |
| O'Brien, Thomas | Michigan | 21st Regiment, Michigan Infantry | Infantry |
| O'Brien, Thomas | Michigan | 27th Regiment, Michigan Infantry | Infantry |
| O'Brien, Thomas | Maine | 1st Battalion, Sharpshooters, Maine Infantry | Sharpshooters |
| O'Brien, Thomas | Maine | 4th Regiment, Maine Infantry | Infantry |
| O'Brien, Thomas | Maine | 20th Regiment, Maine Infantry | Infantry |
| O'Brien, Thomas | Indiana | 35th Regiment, Indiana Infantry | Infantry |
| O'Brien, Thomas | Indiana | 8th Regiment, Indiana Cavalry | Cavalry |
| O'Brien, Thomas | Indiana | 91st Regiment, Indiana Infantry | Infantry |
| O'Brien, Thomas | Union Regular Army | 15th Regiment, US Infantry (Regular Army) | Infantry |
| O'Brien, Thomas | Pennsylvania | Independent Battery E, Pennsylvania Light Artillery | Artillery |
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.