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, Joseph | Massachusetts | 11th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Joseph | Veteran Reserve | 13th Regiment, Veteran Reserve Corps | |
| O'Brien, Joseph | Maryland | 1st Regiment, Maryland Infantry | Infantry |
| O'Brien, Joseph | Michigan | 8th Regiment, Michigan Infantry | Infantry |
| O'Brien, Joseph | Pennsylvania | 63rd Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Joseph | Pennsylvania | 187th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Joseph | Massachusetts | 2nd Regiment, Massachusetts Heavy Artillery | Artillery |
| O'Brien, Joseph | Other Volunteers | 1st Regiment, US Veteran Volunteer Infantry | Infantry |
| O'Brien, Joseph J. | Pennsylvania | 62nd Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Joseph W. | Indiana | 40th Regiment, Indiana Infantry | Infantry |
| O'Brien, Kennedy | Wisconsin | 24th Regiment, Wisconsin Infantry | Infantry |
| O'Brien, Larrance | New York | 150th Regiment, New York Infantry | Infantry |
| O'Brien, Lawrence | Maryland | 2nd Regiment, Maryland Infantry | Infantry |
| O'Brien, Lawrence | Wisconsin | 3rd Regiment, Wisconsin Cavalry | Cavalry |
| O'Brien, Lawrence | Pennsylvania | 100th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Lawrence | Massachusetts | 31st Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Lawrence | Illinois | 34th Regiment, Illinois Infantry | Infantry |
| O'Brien, Lawrence | Illinois | 36th Regiment, Illinois Infantry | Infantry |
| O'Brien, Lawrence | Illinois | 78th Regiment, Illinois Infantry | Infantry |
| O'Brien, Lawrence | Connecticut | 9th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Lewis | Iowa | 5th Regiment, Iowa Cavalry | Cavalry |
| O'Brien, Lewis | Illinois | 23rd Regiment, Illinois Infantry | Infantry |
| O'Brien, Luke | Pennsylvania | 107th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Mannis | Kentucky | 2nd Regiment, Kentucky Infantry | Infantry |
| O'Brien, Mark | Union Regular Army | General Service (Regular Army) | |
| O'Brien, Mark | Maine | 1st Regiment, Maine Veteran Infantry | Infantry |
| O'Brien, Martin | Illinois | 43rd Regiment, Illinois Infantry | Infantry |
| O'Brien, Martin | Ohio | 5th Regiment, Ohio Cavalry | Cavalry |
| O'Brien, Martin | Missouri | 1st Regiment, Missouri Cavalry | Cavalry |
| O'Brien, Martin | Missouri | 7th Regiment, Missouri Infantry | Infantry |
| O'Brien, Martin | Missouri | 11th Regiment, Missouri Infantry | Infantry |
| O'Brien, Martin | Indiana | 20th Regiment, Indiana Infantry | Infantry |
| O'Brien, Martin | New York | 66th Regiment, New York Infantry | Infantry |
| O'Brien, Martin | Massachusetts | 9th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Martin | Massachusetts | 38th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Martin | Illinois | 2nd Regiment, Illinois Light Artillery | Artillery |
| O'Brien, Martin | Ohio | 124th Regiment, Ohio Infantry | Infantry |
| O'Brien, Martin J. | Indiana | 13th Regiment, Indiana Cavalry | Cavalry |
| O'Brien, Martin M. | New Jersey | 11th Regiment, New Jersey Infantry | Infantry |
| O'Brien, Mathew | New York | 69th Regiment, New York State Militia | |
| O'Brien, Mathew | New York | 79th Regiment, New York Infantry | Infantry |
| O'Brien, Mathew | Ohio | 2nd Regiment, Ohio Infantry | Infantry |
| O'Brien, Mathew | Kentucky | 2nd Regiment, Kentucky Infantry | Infantry |
| O'Brien, Matthew | Michigan | 5th Regiment, Michigan Cavalry | Cavalry |
| O'Brien, Matthew | Pennsylvania | 69th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Matthew | Pennsylvania | 186th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Matthew | New York | 11th Regiment, New York Cavalry | Cavalry |
| O'Brien, Matthew | New York | 69th Regiment, New York State Militia | |
| O'Brien, Matthew | New York | 94th Regiment, New York Infantry | Infantry |
| O'Brien, Michael | Illinois | 16th Regiment, Illinois Cavalry | Cavalry |
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.