War Records: O'Brian
Found 756 Civil War soldier records for surname "O'Brian" (Union: 620, Confederacy: 136).
756 Results
| Name | State | Unit | Function |
|---|---|---|---|
| O'Brian, Dennis | District Of Columbia | 1st Regiment, District of Columbia Cavalry | Cavalry |
| O'Brian, Edward | Indiana | 9th Regiment, Indiana Infantry | Infantry |
| O'Brian, Edward | Illinois | Unassigned Illinois Volunteers | |
| O'Brian, Edward | Minnesota | Brackett's Battalion, Minnesota Cavalry | Cavalry |
| O'Brian, Edward | Wisconsin | 14th Regiment, Wisconsin Infantry | Infantry |
| O'Brian, Edward | Pennsylvania | 50th Regiment, Pennsylvania Infantry | Infantry |
| O'Brian, Edward | Pennsylvania | 68th Regiment, Pennsylvania Infantry | Infantry |
| O'Brian, Edward | Veteran Reserve | 13th Regiment, Veteran Reserve Corps | |
| O'Brian, Edward | Veteran Reserve | 14th Regiment, Veteran Reserve Corps | |
| O'Brian, Edward | Maryland | 1st Regiment, Maryland Cavalry | Cavalry |
| O'Brian, Edward | Maryland | 2nd Regiment, Maryland Infantry | Infantry |
| O'Brian, Edward | Wisconsin | 5th Regiment, Wisconsin Infantry | Infantry |
| O'Brian, Edward | Michigan | 7th Regiment, Michigan Cavalry | Cavalry |
| O'Brian, Edward | Michigan | 9th Regiment, Michigan Cavalry | Cavalry |
| O'Brian, Edward | Pennsylvania | 69th Regiment, Pennsylvania Infantry | Infantry |
| O'Brian, Edward | Pennsylvania | 71st Regiment, Pennsylvania Infantry | Infantry |
| O'Brian, Edward | New Jersey | 2nd Regiment, New Jersey Cavalry | Cavalry |
| O'Brian, Edward | Massachusetts | 2nd Regiment, Massachusetts Heavy Artillery | Artillery |
| O'Brian, Edward | Illinois | 7th Regiment, Illinois Cavalry | Cavalry |
| O'Brian, Edward | Illinois | 42nd Regiment, Illinois Infantry | Infantry |
| O'Brian, Edward | Ohio | 61st Regiment, Ohio Infantry | Infantry |
| O'Brian, Edward | New Hampshire | 14th Regiment, New Hampshire Infantry | Infantry |
| O'Brian, Edward | Maryland | 10th Regiment, Maryland Infantry (6 months, 1863-1864) | Infantry |
| O'Brian, Edward | Pennsylvania | 12th Regiment, Pennsylvania Infantry (3 months, 1861) | Infantry |
| O'Brian, Edward | New York | 99th Regiment, New York Infantry National Guard (100 days, 1864) | Infantry |
| O'Brian, Edward F. | Massachusetts | 28th Regiment, Massachusetts Infantry | Infantry |
| O'Brian, Edward M. | Michigan | 1st Regiment, Michigan Light Artillery | Artillery |
| O'Brian, Edwin | Indiana | 9th Regiment, Indiana Infantry | Infantry |
| O'Brian, Ellmore | West Virginia | 7th Regiment, West Virginia Cavalry | Cavalry |
| O'Brian, Enoc W. | Indiana | 57th Regiment, Indiana Infantry | Infantry |
| O'Brian, Francis | New Jersey | 7th Regiment, New Jersey Infantry | Infantry |
| O'Brian, Francis | Pennsylvania | 13th Regiment, Pennsylvania Cavalry (117th Volunteers) | Cavalry |
| O'Brian, Francis | Pennsylvania | 15th Regiment, Pennsylvania Cavalry (160th Volunteers) | Cavalry |
| O'Brian, Francis | New Jersey | 5th Regiment, New Jersey Infantry | Infantry |
| O'Brian, Francis B. | Minnesota | 10th Regiment, Minnesota Infantry | Infantry |
| O'Brian, Frank | Maine | 7th Regiment, Maine Infantry | Infantry |
| O'Brian, Frank | Iowa | 8th Regiment, Iowa Infantry | Infantry |
| O'Brian, Frederick | Pennsylvania | 199th Regiment, Pennsylvania Infantry | Infantry |
| O'Brian, Frederick | Maine | 17th Regiment, Maine Infantry | Infantry |
| O'Brian, George | Wisconsin | 34th Regiment, Wisconsin Infantry (Militia) | Infantry |
| O'Brian, George | Pennsylvania | 61st Regiment, Pennsylvania Infantry | Infantry |
| O'Brian, George | Illinois | 50th Regiment, Illinois Infantry | Infantry |
| O'Brian, George | Connecticut | 20th Regiment, Connecticut Infantry | Infantry |
| O'Brian, George | Veteran Reserve | 12th Regiment, Veteran Reserve Corps | |
| O'Brian, George | Delaware | 4th Regiment, Delaware Infantry | Infantry |
| O'Brian, George | Ohio | 26th Regiment, Ohio Infantry | Infantry |
| O'Brian, George C. | Pennsylvania | 2nd Regiment, Pennsylvania Cavalry (59th Volunteers) | Cavalry |
| O'Brian, George G. | Union Regular Army | 9th Regiment, US Infantry (Regular Army) | Infantry |
| O'Brian, George Mc. | Illinois | Cogswell's Independent Battery, Illinois Light Artillery | Artillery |
| O'Brian, George W. | Kentucky | 14th Regiment, Kentucky Infantry | Infantry |
Search External Archives
Search for "O'Brian" 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'Brian" 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.