U.S. Army
William Peter Kostynick
July 7, 1947—September 6, 2003
SP4
Life Timeline
56 years1947
Born
July 7, 1947
US ARMY
Service Record
Vietnam War
Vietnam War
Conflict
SP4
2003
Passed Away
September 6, 2003
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
SP4
War / Conflict
Vietnam War
Sourced from official cemetery data; last updated May 30, 2026.Learn more