US NAVY
John Joseph Brennan Jr
October 16, 1922—July 13, 2003
GM2
Life Timeline
80 years1922
Born
October 16, 1922
US NAVY
Service Record
World War II
World War II
Conflict
GM2
2003
Passed Away
July 13, 2003
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
GM2
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more