U.S. Army
Daniel W O'Brien
August 21, 1940—April 13, 2004
LT COL
Life Timeline
63 years1940
Born
August 21, 1940
US ARMY
Service Record
LT COL
2004
Passed Away
April 13, 2004
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
LT COL
Sourced from official cemetery data; last updated May 30, 2026.Learn more