Columbia subject headings:
Byzantine Empire--History, Military--Congresses.
Military art and science--Byzantine Empire--History--Congresses.
Military art and science--Rome--History--Congresses.
Rome--History, Military--Congresses.
Harvard subject headings:
Byzantine Empire--History, Military--Congresses.
Military art and science--Byzantine Empire--History--Congresses.
Military art and science--Rome--History--Congresses.
Rome--History, Military--Congresses.
Princeton subject headings:
Byzantine Empire--Boundaries--Congresses.
Byzantine Empire--History, Military--Congresses.
Rome--Boundaries--Congresses.
Rome--History, Military--Congresses.
Turkey--History, Military--Congresses.