U.S. Army
Gerald S O'Brennan
January 2, 1901—August 18, 1981
PFC
Life Timeline
80 years1901
Born
January 2, 1901
US ARMY
Service Record
World War I
World War I
Conflict
PFC
1981
Passed Away
August 18, 1981
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