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, Daniel | Massachusetts | 20th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Daniel | Massachusetts | 31st Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Daniel | Massachusetts | 39th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Daniel | Illinois | 23rd Regiment, Illinois Infantry | Infantry |
| O'Brien, Daniel | Illinois | 47th Regiment, Illinois Infantry | Infantry |
| O'Brien, Daniel | Illinois | 55th Regiment, Illinois Infantry | Infantry |
| O'Brien, Daniel | Illinois | 74th Regiment, Illinois Infantry | Infantry |
| O'Brien, Daniel | Illinois | 113th Regiment, Illinois Infantry | Infantry |
| O'Brien, Daniel | Ohio | 103rd Regiment, Ohio Infantry | Infantry |
| O'Brien, Daniel | New Hampshire | 10th Regiment, New Hampshire Infantry | Infantry |
| O'Brien, Daniel | Iowa | 26th Regiment, Iowa Infantry | Infantry |
| O'Brien, Daniel | Other Volunteers | 8th Regiment, US Veteran Volunteer Infantry | Infantry |
| O'Brien, Daniel J. | New York | 7th Regiment, New York Heavy Artillery | Artillery |
| O'Brien, David | Massachusetts | 32nd Regiment, Massachusetts Infantry | Infantry |
| O'Brien, David | New York | 73rd Regiment, New York Infantry | Infantry |
| O'Brien, David | Missouri | 11th Regiment, Missouri Infantry | Infantry |
| O'Brien, David | Connecticut | 9th Regiment, Connecticut Infantry | Infantry |
| O'Brien, David | Wisconsin | 20th Regiment, Wisconsin Infantry | Infantry |
| O'Brien, David | Pennsylvania | 48th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, David | California | 3rd Regiment, California Infantry | Infantry |
| O'Brien, David | New York | 84th Regiment, New York Infantry | Infantry |
| O'Brien, David | Massachusetts | 48th Regiment, Massachusetts Infantry (Militia) | Infantry |
| O'Brien, David | Illinois | 89th Regiment, Illinois Infantry | Infantry |
| O'Brien, David | Veteran Reserve | 4th Regiment, Veteran Reserve Corps | |
| O'Brien, Dennis | Missouri | 11th Regiment, Missouri Infantry | Infantry |
| O'Brien, Dennis | Connecticut | 1st Regiment, Connecticut Cavalry | Cavalry |
| O'Brien, Dennis | Michigan | 1st Regiment, Michigan Cavalry | Cavalry |
| O'Brien, Dennis | Michigan | 8th Regiment, Michigan Infantry | Infantry |
| O'Brien, Dennis | Union Regular Army | General Service (Regular Army) | |
| O'Brien, Dennis | Union Regular Army | Ordnance Department (Regular Army) | |
| O'Brien, Dennis | Massachusetts | 1st Regiment, Massachusetts Cavalry | Cavalry |
| O'Brien, Dennis | Other Volunteers | Signal Corps, US Volunteers | |
| O'Brien, Dennis | Ohio | 5th Regiment, Ohio Cavalry | Cavalry |
| O'Brien, Dennis | Ohio | 119th Regiment, Ohio Infantry | Infantry |
| O'Brien, Dennis | Ohio | 124th Regiment, Ohio Infantry | Infantry |
| O'Brien, Dennis | Illinois | 56th Regiment, Illinois Infantry | Infantry |
| O'Brien, Dennis | Missouri | 6th Regiment, Missouri Infantry | Infantry |
| O'Brien, Dennis | Missouri | 7th Regiment, Missouri Infantry | Infantry |
| O'Brien, Dennis | Connecticut | 1st Regiment, Connecticut Infantry | Infantry |
| O'Brien, Dennis | Connecticut | 3rd Regiment, Connecticut Infantry | Infantry |
| O'Brien, Dennis | Other Volunteers | 2nd Regiment, US Veteran Volunteer Infantry | Infantry |
| O'Brien, Dennis | Veteran Reserve | 3rd Independent Company, Veteran Reserve Corps | |
| O'Brien, Dennis | Veteran Reserve | 2nd Battalion, Veteran Reserve Corps | |
| O'Brien, Dennis | Veteran Reserve | 9th Regiment, Veteran Reserve Corps | |
| O'Brien, Dennis | Veteran Reserve | 18th Regiment, Veteran Reserve Corps | |
| O'Brien, Dennis | Veteran Reserve | 22nd Regiment, Veteran Reserve Corps | |
| O'Brien, Dennis | Maryland | 3rd Regiment, Maryland Infantry | Infantry |
| O'Brien, Dennis | Maryland | 13th Regiment, Maryland Infantry | Infantry |
| O'Brien, Dennis | Louisiana | 1st Regiment, Louisiana Cavalry | Cavalry |
| O'Brien, Dennis | Michigan | 9th Regiment, Michigan 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.