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 | Pennsylvania | 28th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 61st Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 74th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 81st Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 90th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 134th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 186th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Pennsylvania | 199th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Thomas | Union Regular Army | Corps of Engineers (Regular Army) | Engineers |
| O'Brien, Thomas | New Jersey | 1st Regiment, New Jersey Cavalry | Cavalry |
| O'Brien, Thomas | New York | 107th Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | New York | 115th Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | California | 2nd Regiment, California Infantry | Infantry |
| O'Brien, Thomas | California | 6th Regiment, California Infantry | Infantry |
| O'Brien, Thomas | New York | 193rd Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | New Jersey | 6th Regiment, New Jersey Infantry | Infantry |
| O'Brien, Thomas | Kentucky | Independent Battery C, Kentucky Light Artillery | Artillery |
| O'Brien, Thomas | Kentucky | 4th Regiment, Kentucky Cavalry | Cavalry |
| O'Brien, Thomas | New York | 63rd Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | New York | 67th Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | New York | 81st Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | New York | 83rd Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | New York | 8th Regiment, New York Heavy Artillery | Artillery |
| O'Brien, Thomas | New York | 91st Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | New York | 94th Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | New York | 96th Regiment, New York Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 1st Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 2nd Regiment, Massachusetts Cavalry | Cavalry |
| O'Brien, Thomas | Massachusetts | 3rd Regiment, Massachusetts Heavy Artillery | Artillery |
| O'Brien, Thomas | Massachusetts | 3rd Regiment, Massachusetts Cavalry | Cavalry |
| O'Brien, Thomas | Massachusetts | 4th Regiment, Massachusetts Heavy Artillery | Artillery |
| O'Brien, Thomas | Massachusetts | 6th Independent Battery, Massachusetts Light Artillery | Artillery |
| O'Brien, Thomas | Massachusetts | 9th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 16th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 17th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 20th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 24th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 28th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 30th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 39th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Massachusetts | 47th Regiment, Massachusetts Infantry (Militia) | Infantry |
| O'Brien, Thomas | Massachusetts | 61st Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Thomas | Illinois | 9th Regiment, Illinois Cavalry | Cavalry |
| O'Brien, Thomas | Illinois | 7th Regiment, Illinois Infantry | Infantry |
| O'Brien, Thomas | Illinois | 42nd Regiment, Illinois Infantry | Infantry |
| O'Brien, Thomas | Illinois | 57th Regiment, Illinois Infantry | Infantry |
| O'Brien, Thomas | Illinois | 115th Regiment, Illinois Infantry | Infantry |
| O'Brien, Thomas | Ohio | 10th Regiment, Ohio Cavalry | Cavalry |
| O'Brien, Thomas | Ohio | 10th Regiment, Ohio Infantry | Infantry |
| O'Brien, Thomas | Ohio | 11th Regiment, Ohio Infantry | Infantry |
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.