U.S. Army
Dennis O'Connor
Unknown—May 25, 1904
Life Timeline
Birth
Born
US ARMY
Service Record
Civil War
Civil War
Conflict
1904
Passed Away
May 25, 1904
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
War / Conflict
Civil War
Sourced from official cemetery data; last updated May 30, 2026.Learn more