U.S. Army
Harry Deforest O'Brien
March 22, 1934—September 24, 2021
SGT
Life Timeline
87 years1934
Born
March 22, 1934
US ARMY
Service Record
SGT
2021
Passed Away
September 24, 2021
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
SGT
Sourced from official cemetery data; last updated May 30, 2026.Learn more