U.S. Army
Frank O'Brien
October 18, 1886—February 9, 1945
PFC
Life Timeline
58 years1886
Born
October 18, 1886
US ARMY
Service Record
World War I
World War I
Conflict
PFC
1945
Passed Away
February 9, 1945
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
PFC
War / Conflict
World War I
Sourced from official cemetery data; last updated May 30, 2026.Learn more