U.S. Army
Thomas O'Brien
Unknown—April 21, 1936
2ND LIEUTENANT
Life Timeline
Birth
Born
US ARMY
Service Record
World War I
World War I
Conflict
2ND LIEUTENANT
1936
Passed Away
April 21, 1936
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
2ND LIEUTENANT
War / Conflict
World War I
Sourced from official cemetery data; last updated May 30, 2026.Learn more