US MARINE CORPS
Elmer Aloysius O'Brien Jr
April 30, 1945—December 21, 2019
SGT
Life Timeline
74 years1945
Born
April 30, 1945
US MARINE CORPS
Service Record
Vietnam War
Vietnam War
Conflict
SGT
2019
Passed Away
December 21, 2019
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
SGT
War / Conflict
Vietnam War
Sourced from official cemetery data; last updated May 30, 2026.Learn more