U.S. Army
Martin Nicholas Koos
February 14, 1918—April 16, 1960
CWO
Life Timeline
42 years1918
Born
February 14, 1918
US ARMY
Service Record
World War II
World War II
Conflict
CWO
1960
Passed Away
April 16, 1960
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
CWO
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more