US MARINE CORPS
Dennis J O'Flaherty
December 21, 1934—January 26, 2014
GYSGT
Life Timeline
79 years1934
Born
December 21, 1934
US MARINE CORPS
Service Record
Vietnam War
Vietnam War
Conflict
GYSGT
2014
Passed Away
January 26, 2014
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
GYSGT
War / Conflict
Vietnam War
Sourced from official cemetery data; last updated May 30, 2026.Learn more