Columbia subject headings:
Italy--History--476-1492.
Military art and science--History--Medieval, 500-1500.
Military history, Medieval.
Harvard subject headings:
Italy--History--476-1492.
Military art and science--History--Medieval, 500-1500
Military history, Medieval.
Princeton subject headings:
Italy--History--476-1492.
Military art and science--History--Medieval, 500-1500.
Military history, Medieval.