US MARINE CORPS
James J O'Brien
March 19, 1921—October 1, 2019
CPL
Life Timeline
98 years1921
Born
March 19, 1921
US MARINE CORPS
Service Record
World War II
World War II
Conflict
CPL
2019
Passed Away
October 1, 2019
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
CPL
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more