US MARINE CORPS
Cyril Wayne Day
December 9, 1939—April 22, 2018
GYSGT
Life Timeline
78 years1939
Born
December 9, 1939
US MARINE CORPS
Service Record
Vietnam War
Vietnam War
Conflict
GYSGT
2018
Passed Away
April 22, 2018
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