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, Dennis | Michigan | 18th Regiment, Michigan Infantry | Infantry |
| O'Brien, Dennis | Maine | 1st Regiment, Maine Cavalry | Cavalry |
| O'Brien, Dennis | Maine | 16th Regiment, Maine Infantry | Infantry |
| O'Brien, Dennis | Maine | 20th Regiment, Maine Infantry | Infantry |
| O'Brien, Dennis | Indiana | 35th Regiment, Indiana Infantry | Infantry |
| O'Brien, Dennis | Pennsylvania | 11th Regiment, Pennsylvania Cavalry (108th Volunteers) | Cavalry |
| O'Brien, Dennis | Pennsylvania | 18th Regiment, Pennsylvania Cavalry (163rd Volunteers) | Cavalry |
| O'Brien, Dennis | Pennsylvania | 72nd Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Dennis | Pennsylvania | 95th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Dennis | Pennsylvania | 110th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, Dennis | Kentucky | 34th Regiment, Kentucky Infantry | Infantry |
| O'Brien, Dennis | New York | 69th Regiment, New York Infantry | Infantry |
| O'Brien, Dennis | Massachusetts | 3rd Regiment, Massachusetts Cavalry | Cavalry |
| O'Brien, Dennis | Massachusetts | 28th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Dennis | Massachusetts | 30th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Dennis | Massachusetts | 32nd Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Dennis | Massachusetts | 49th Regiment, Massachusetts Infantry (Militia) | Infantry |
| O'Brien, Dennis | Illinois | 28th Regiment, Illinois Infantry | Infantry |
| O'Brien, Dennis | Illinois | 47th Regiment, Illinois Infantry | Infantry |
| O'Brien, Dennis | Illinois | 58th Regiment, Illinois Infantry | Infantry |
| O'Brien, Dennis | Ohio | 6th Regiment, Ohio Infantry | Infantry |
| O'Brien, Dennis | Ohio | 12th Regiment, Ohio Cavalry | Cavalry |
| O'Brien, Dennis | Ohio | 24th Regiment, Ohio Infantry | Infantry |
| O'Brien, Dennis | Ohio | 27th Regiment, Ohio Infantry | Infantry |
| O'Brien, Dennis | Missouri | 1st Regiment, Missouri Light Artillery | Artillery |
| O'Brien, Dennis | Missouri | 1st Regiment, Missouri Infantry (3 months 1861) | Infantry |
| O'Brien, Dennis | Connecticut | 9th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Dennis | Other Volunteers | 3rd Regiment, US Veteran Volunteer Infantry | Infantry |
| O'Brien, Dennis J. | Massachusetts | 4th Regiment, Massachusetts Heavy Artillery | Artillery |
| O'Brien, Dennis J. | Veteran Reserve | 2nd Battalion, Veteran Reserve Corps | |
| O'Brien, E. Frederick | New Jersey | 33rd Regiment, New Jersey Infantry | Infantry |
| O'Brien, Edmund | New York | 11th Regiment, New York Cavalry | Cavalry |
| O'Brien, Edmund | New York | 37th Regiment, New York Infantry | Infantry |
| O'Brien, Edmund | Missouri | 29th Regiment, Missouri Infantry | Infantry |
| O'Brien, Edward | Veteran Reserve | 2nd Battalion, Veteran Reserve Corps | |
| O'Brien, Edward | New Hampshire | 3rd Regiment, New Hampshire Infantry | Infantry |
| O'Brien, Edward | Illinois | 1st Regiment, Illinois Light Artillery | Artillery |
| O'Brien, Edward | Connecticut | 17th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Edward | Maryland | Purnell Legion, Maryland Infantry | Infantry |
| O'Brien, Edward | New Jersey | Volunteer Recruits, Hoboken, New Jersey | |
| O'Brien, Edward | Massachusetts | 28th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Edward | New Hampshire | 11th Regiment, New Hampshire Infantry | Infantry |
| O'Brien, Edward | Connecticut | 2nd Regiment, Connecticut Heavy Artillery | Artillery |
| O'Brien, Edward | Connecticut | 15th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Edward | Connecticut | 27th Regiment, Connecticut Infantry | Infantry |
| O'Brien, Edward | Veteran Reserve | 13th Regiment, Veteran Reserve Corps | |
| O'Brien, Edward | Maryland | 1st Regiment, Maryland Cavalry | Cavalry |
| O'Brien, Edward | Maryland | 2nd Regiment, Maryland Infantry | Infantry |
| O'Brien, Edward | Maryland | 8th Regiment, Maryland Infantry | Infantry |
| O'Brien, Edward | Wisconsin | 5th Regiment, Wisconsin 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.