U.S. Army
Robert Francis O'Brien
February 14, 1921—September 6, 2012
CAPT
Life Timeline
91 years1921
Born
February 14, 1921
US ARMY
Service Record
World War II
World War II
Conflict
CAPT
2012
Passed Away
September 6, 2012
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
CAPT
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more