US NAVY
Dennis R Thorneycroft
September 19, 1943—July 18, 2015
SFM3
Life Timeline
71 years1943
Born
September 19, 1943
US NAVY
Service Record
Vietnam War
Vietnam War
Conflict
SFM3
2015
Passed Away
July 18, 2015
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
SFM3
War / Conflict
Vietnam War
Sourced from official cemetery data; last updated May 30, 2026.Learn more