War Records: O'Brian

Found 756 Civil War soldier records for surname "O'Brian" (Union: 620, Confederacy: 136).

756 Results

Union (620) Confederacy (136)
Name State Unit Function
O'Brian, John Texas 1st Regiment, Texas Cavalry Cavalry
O'Brian, John Veteran Reserve 23rd Regiment, Veteran Reserve Corps
O'Brian, John New Hampshire 2nd Regiment, New Hampshire Infantry Infantry
O'Brian, John Vermont 2nd Battery, Vermont Light Artillery Artillery
O'Brian, John Vermont 4th Regiment, Vermont Infantry Infantry
O'Brian, John Union Regular Army 4th Regiment, US Infantry (Regular Army) Infantry
O'Brian, John Maryland 1st Regiment, Maryland Cavalry, Potomac Home Brigade Cavalry
O'Brian, John Maryland 3rd Regiment, Maryland Infantry, Potomac Home Brigade Infantry
O'Brian, John Maryland 6th Regiment, Maryland Infantry Infantry
O'Brian, John Louisiana 2nd Regiment, Louisiana Infantry Infantry
O'Brian, John Indiana 13th Regiment, Indiana Cavalry Cavalry
O'Brian, John Michigan 14th Regiment, Michigan Infantry Infantry
O'Brian, John Michigan 16th Regiment, Michigan Infantry Infantry
O'Brian, John Indiana 25th Regiment, Indiana Infantry Infantry
O'Brian, John Delaware 1st Regiment, Delaware Infantry Infantry
O'Brian, John Pennsylvania 2nd Regiment, Pennsylvania Cavalry (59th Volunteers) Cavalry
O'Brian, John Pennsylvania 46th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 55th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 66th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 67th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 81st Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 95th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 97th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 99th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 104th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 118th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 199th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Pennsylvania 210th Regiment, Pennsylvania Infantry Infantry
O'Brian, John Union Regular Army 6th Regiment, US Cavalry (Regular Army) Cavalry
O'Brian, John Rhode Island 2nd Regiment, Rhode Island Cavalry Cavalry
O'Brian, John Washington Territory 1st Regiment, Washington Infantry Infantry
O'Brian, John New Jersey 1st Regiment, New Jersey Cavalry Cavalry
O'Brian, John New Jersey 27th Regiment, New Jersey Infantry Infantry
O'Brian, John New York 124th Regiment, New York Infantry Infantry
O'Brian, John New York 14th Regiment, New York Infantry Infantry
O'Brian, John New York 170th Regiment, New York Infantry Infantry
O'Brian, John New York 173rd Regiment, New York Infantry Infantry
O'Brian, John New York 175th Regiment, New York Infantry Infantry
O'Brian, John New York 177th Regiment, New York Infantry Infantry
O'Brian, John New York 193rd Regiment, New York Infantry Infantry
O'Brian, John New York 1st Regiment, New York Provisional Cavalry Cavalry
O'Brian, John New York 2nd Regiment, New York Veteran Cavalry Cavalry
O'Brian, John New York 3rd Independent Battery, New York Light Artillery Artillery
O'Brian, John Kentucky 18th Regiment, Kentucky Infantry Infantry
O'Brian, John New York 69th Regiment, New York Infantry Infantry
O'Brian, John New Jersey Battery D, New Jersey Light Artillery Artillery
O'Brian, John New York 6th Regiment, New York Heavy Artillery Artillery
O'Brian, John Massachusetts 1st Regiment, Massachusetts Cavalry Cavalry
O'Brian, John Massachusetts 2nd Regiment, Massachusetts Heavy Artillery Artillery
O'Brian, John Massachusetts 12th Regiment, Massachusetts 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.