US NAVY
John J Costello
December 20, 1932—May 29, 2001
EM3
Life Timeline
68 years1932
Born
December 20, 1932
US NAVY
Service Record
Korean War
Korean War
Conflict
EM3
2001
Passed Away
May 29, 2001
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
EM3
War / Conflict
Korean War
Sourced from official cemetery data; last updated May 30, 2026.Learn more