US NAVY
John J Hartnett Jr
February 19, 1919—October 14, 2017
LT
Life Timeline
98 years1919
Born
February 19, 1919
US NAVY
Service Record
World War II
World War II
Conflict
LT
2017
Passed Away
October 14, 2017
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
LT
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more