US NAVY
John Mark Gannon
March 8, 1925—December 12, 2013
MOMM3
Life Timeline
88 years1925
Born
March 8, 1925
US NAVY
Service Record
World War II
World War II
Conflict
MOMM3
2013
Passed Away
December 12, 2013
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
MOMM3
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more