Reports show 19-year-old army corporal Demaret M. Kirtley was reported missing in December 1950 after his unit withdrew from an area east of the Chosin Reservoir in present-day North Korea.
The Kaycee-born man was never reported as being a prisoner of war, and he was declared dead in late 1953.
Kirtley was positively identified in May after remains in burial grounds near the Chosin Reservoir were exhumed for testing last year.
Officials used dental, DNA, and other analysis and evidence to identify the remains.
It is unclear what will happen with Kirtley's remains.