RECORDS File Unit : Combat Area Casualties Returned Alive File , 5/1/1962 - 3/22/1979 In the Series : Records On Military Personnel Who Died, Were Missing In Action or Prisoners of War , as a Result of the Vietnam Conflict, created 1/20/1967 - 12/1998, documenting the period 6/8/1956 - 1/21/1998. - Record Group