US MARINE CORPS
Gregory J Costello
August 9, 1951—July 11, 2015
CPL
Life Timeline
63 years1951
Born
August 9, 1951
US MARINE CORPS
Service Record
Vietnam War
Vietnam War
Conflict
CPL
2015
Passed Away
July 11, 2015
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
CPL
War / Conflict
Vietnam War
Sourced from official cemetery data; last updated May 30, 2026.Learn more