War Records: O'Brien

Found 1,738 Civil War soldier records for surname "O'Brien" (Union: 1389, Confederacy: 349).

1,738 Results

Union (1,389) Confederacy (349)
Name State Unit Function
O'Brien, William Massachusetts 3rd Regiment, Massachusetts Heavy Artillery Artillery
O'Brien, William Massachusetts 3rd Regiment, Massachusetts Cavalry Cavalry
O'Brien, William Massachusetts 4th Regiment, Massachusetts Cavalry Cavalry
O'Brien, William Massachusetts 9th Regiment, Massachusetts Infantry Infantry
O'Brien, William Massachusetts 17th Regiment, Massachusetts Infantry Infantry
O'Brien, William Massachusetts 27th Regiment, Massachusetts Infantry Infantry
O'Brien, William Massachusetts 33rd Regiment, Massachusetts Infantry Infantry
O'Brien, William Massachusetts 37th Regiment, Massachusetts Infantry Infantry
O'Brien, William Massachusetts 38th Regiment, Massachusetts Infantry Infantry
O'Brien, William Massachusetts 39th Regiment, Massachusetts Infantry Infantry
O'Brien, William Massachusetts 47th Regiment, Massachusetts Infantry (Militia) Infantry
O'Brien, William Massachusetts 48th Regiment, Massachusetts Infantry (Militia) Infantry
O'Brien, William Massachusetts 49th Regiment, Massachusetts Infantry (Militia) Infantry
O'Brien, William Massachusetts 57th Regiment, Massachusetts Infantry Infantry
O'Brien, William Illinois 34th Regiment, Illinois Infantry Infantry
O'Brien, William Illinois 42nd Regiment, Illinois Infantry Infantry
O'Brien, William Illinois 57th Regiment, Illinois Infantry Infantry
O'Brien, William Illinois 99th Regiment, Illinois Infantry Infantry
O'Brien, William Ohio 6th Regiment, Ohio Infantry Infantry
O'Brien, William Ohio 10th Regiment, Ohio Infantry Infantry
O'Brien, William Ohio 15th Regiment, Ohio Infantry Infantry
O'Brien, William Ohio 47th Regiment, Ohio Infantry Infantry
O'Brien, William Illinois 132nd Regiment, Illinois Infantry (100 days, 1864) Infantry
O'Brien, William Connecticut 2nd Regiment, Connecticut Heavy Artillery Artillery
O'Brien, William Veteran Reserve 1st Battalion, Veteran Reserve Corps
O'Brien, William New Hampshire 1st Regiment, New Hampshire Cavalry Cavalry
O'Brien, William G. Maine 7th Regiment, Maine Infantry Infantry
O'Brien, William G. Union Regular Army Ordnance Department (Regular Army)
O'Brien, William H. Massachusetts 3rd Regiment, Massachusetts Cavalry Cavalry
O'Brien, William H. Illinois 62nd Regiment, Illinois Infantry Infantry
O'Brien, William J. Massachusetts 42nd Regiment, Massachusetts Infantry (100 days, 1864) (Militia) Infantry
O'Brien, William M. Illinois 18th Regiment, Illinois Infantry Infantry
O'Brien, William S. Minnesota 9th Regiment, Minnesota Infantry Infantry
O'Brien, William Smith Ohio 86th Regiment, Ohio Infantry Infantry
O'Brien, Wm. Connecticut 11th Regiment, Connecticut Infantry Infantry
O'Brien, Wm. Vermont 2nd Regiment, Vermont Infantry Infantry
O'Brien, Wm. Vermont 3rd Regiment, Vermont Infantry Infantry
O'Brien, Wm. Maine 1st Regiment, Maine Cavalry Cavalry
O'Brien, Wm. New York 125th Regiment, New York Infantry Infantry

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