U.S. Army
Guillermo Henry Castillo
February 16, 1931—June 26, 1999
SGM
Life Timeline
68 years1931
Born
February 16, 1931
US ARMY
Service Record
Vietnam War
Vietnam War
Conflict
SGM
1999
Passed Away
June 26, 1999
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
SGM
War / Conflict
Vietnam War
Sourced from official cemetery data; last updated May 30, 2026.Learn more