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, James B. | Missouri | 2nd Regiment, Missouri State Militia Cavalry | Cavalry |
| O'Brien, James D. | Veteran Reserve | 2nd Battalion, Veteran Reserve Corps | |
| O'Brien, James H. | Nevada | 1st Battalion, Nevada Infantry | Infantry |
| O'Brien, James S. | Illinois | 8th Regiment, Illinois Infantry | Infantry |
| O'Brien, James S. | Illinois | 17th Regiment, Illinois Cavalry | Cavalry |
| O'Brien, James W. | New York | 76th Regiment, New York Infantry | Infantry |
| O'Brien, James W. | New York | 1st Regiment, New York Engineers | Engineers |
| O'Brien, Jefferson | Illinois | 42nd Regiment, Illinois Infantry | Infantry |
| O'Brien, Jeremiah | New York | 41st Regiment, New York Infantry | Infantry |
| O'Brien, Jeremiah | Indiana | 11th Regiment, Indiana Infantry | Infantry |
| O'Brien, Jeremiah | Maryland | 3rd Regiment, Maryland Cavalry | Cavalry |
| O'Brien, Jeremiah | Michigan | 20th Regiment, Michigan Infantry | Infantry |
| O'Brien, Jeremiah | Indiana | 35th Regiment, Indiana Infantry | Infantry |
| O'Brien, Jeremiah | New York | 1st Regiment, New York Mounted Rifles | |
| O'Brien, Jeremiah | Massachusetts | 47th Regiment, Massachusetts Infantry (Militia) | Infantry |
| O'Brien, Jeremiah | Massachusetts | 1st Regiment, Massachusetts Heavy Artillery | Artillery |
| O'Brien, Jeremiah | Massachusetts | 1st Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Jeremiah | Massachusetts | 2nd Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Jeremiah | Massachusetts | 16th Unattached Company, Massachusetts Infantry (Militia) | Infantry |
| O'Brien, Jeremiah | Massachusetts | 22nd Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Jeremiah | Massachusetts | 24th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Jeremiah | Massachusetts | 28th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Jeremiah | Massachusetts | 35th Regiment, Massachusetts Infantry | Infantry |
| O'Brien, Jerry | Massachusetts | 16th Unattached Company, Massachusetts Infantry (Militia) | Infantry |
| O'Brien, John | Nevada | 1st Battalion, Nevada Cavalry | Cavalry |
| O'Brien, John | New York | 1st Regiment, New York Cavalry | Cavalry |
| O'Brien, John | New York | 25th Regiment, New York Infantry | Infantry |
| O'Brien, John | New York | 2nd Regiment, New York Infantry | Infantry |
| O'Brien, John | New York | 59th Regiment, New York Infantry | Infantry |
| O'Brien, John | Missouri | Unassigned Missouri Volunteers | |
| O'Brien, John | Maryland | 2nd Regiment, Maryland Infantry | Infantry |
| O'Brien, John | Maine | Unassigned Maine Volunteers | |
| O'Brien, John | Illinois | Unassigned Illinois Volunteers | |
| O'Brien, John | Missouri | 10th Regiment, Missouri Cavalry | Cavalry |
| O'Brien, John | Missouri | 11th Regiment, Missouri Infantry | Infantry |
| O'Brien, John | Iowa | 9th Regiment, Iowa Cavalry | Cavalry |
| O'Brien, John | Connecticut | 1st Regiment, Connecticut Cavalry | Cavalry |
| O'Brien, John | Connecticut | 5th Regiment, Connecticut Infantry | Infantry |
| O'Brien, John | Connecticut | 7th Regiment, Connecticut Infantry | Infantry |
| O'Brien, John | Connecticut | 10th Regiment, Connecticut Infantry | Infantry |
| O'Brien, John | Connecticut | 12th Regiment, Connecticut Infantry | Infantry |
| O'Brien, John | Veteran Reserve | Unassigned Veteran Reserve Corps | |
| O'Brien, John | Union Regular Army | Ordnance Department (Regular Army) | |
| O'Brien, John | Union Regular Army | US Army (Regular Army) | |
| O'Brien, John | Michigan | 6th Regiment, Michigan Heavy Artillery | Artillery |
| O'Brien, John | Michigan | 10th Regiment, Michigan Cavalry | Cavalry |
| O'Brien, John | Pennsylvania | 27th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, John | Pennsylvania | 77th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, John | Pennsylvania | 105th Regiment, Pennsylvania Infantry | Infantry |
| O'Brien, John | Pennsylvania | 109th Regiment, Pennsylvania 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.