US NAVY
Mark Edward O'Neal
July 21, 1952—December 6, 2021
OS3
Life Timeline
69 years1952
Born
July 21, 1952
US NAVY
Service Record
Vietnam War
Vietnam War
Conflict
OS3
2021
Passed Away
December 6, 2021
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
OS3
War / Conflict
Vietnam War
Sourced from official cemetery data; last updated May 30, 2026.Learn more