U.S. Army
Joseph P O'Brien Sr
March 4, 1920—August 8, 2001
S SGT
Life Timeline
81 years1920
Born
March 4, 1920
US ARMY
Service Record
World War II
World War II
Conflict
S SGT
2001
Passed Away
August 8, 2001
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
S SGT
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more