US MARINE CORPS
John Leon Simpson
June 21, 1935—August 29, 2016
SGT
Life Timeline
81 years1935
Born
June 21, 1935
US MARINE CORPS
Service Record
Korean War
Korean War
Conflict
SGT
2016
Passed Away
August 29, 2016
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
SGT
War / Conflict
Korean War
Sourced from official cemetery data; last updated May 30, 2026.Learn more