U.S. Army
Leo Anthony Mastroianni Jr
September 21, 1934—April 29, 2020
SP3
Life Timeline
85 years1934
Born
September 21, 1934
US ARMY
Service Record
Korean War
Korean War
Conflict
SP3
2020
Passed Away
April 29, 2020
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
SP3
War / Conflict
Korean War
Sourced from official cemetery data; last updated May 30, 2026.Learn more