US MARINE CORPS
James J O'Brien
January 28, 1935—October 23, 2017
CPL
Life Timeline
82 years1935
Born
January 28, 1935
US MARINE CORPS
Service Record
Korean War
Korean War
Conflict
CPL
2017
Passed Away
October 23, 2017
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
CPL
War / Conflict
Korean War
Sourced from official cemetery data; last updated May 30, 2026.Learn more