Columbia subject headings:
Korea--History, Military--935-1392.
Korea--History, Military--To 935.
Korea--Military policy.
Military art and science--Korea--History.
Harvard subject headings:
Korea--History, Military--To 935.
Korea--Military policy--History.
Princeton subject headings:
Korea--History, Military--935-1392.
Korea--History, Military--To 935.
Korea--Military policy.
Military art and science--Korea--History.