On the left side, there is a box that lists the collections in the U.S. Military Service and Conflict Records:
Right in the middle of the matches was a link about results found in US and world newspapers. Those are not just military records - they are for a general surname search.
In order to see the search results, I had to register or sign in. I signed in, since I have a paid subscription. I clicked on the first match on the list, and saw the Korean War Casualty File record transcription for Edward J. Seaver: