U.S. Army
John Brennan
May 3, 1889—September 18, 1955
Life Timeline
66 years1889
Born
May 3, 1889
US ARMY
Service Record
World War I
World War I
Conflict
1955
Passed Away
September 18, 1955
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
War / Conflict
World War I
Sourced from official cemetery data; last updated May 30, 2026.Learn more