Columbia subject headings:
Military history--Congresses.
Politics and war--History--Congresses.
World politics--History--Congresses.
Harvard subject headings:
Military history--Congresses.
Politics and war--History--Congresses.
World politics--History--Congresses.
Princeton subject headings:
Military history--Congresses.
Politics and war--History--Congresses.
World politics--History--Congresses.