Columbia subject headings:
Just war doctrine--History.
Rome--Army--History.
Rome--History--Republic, 510-30 B.C.
Harvard subject headings:
Just war doctrine--History.
Rome--Army--History.
Rome--History--Republic, 510 B.C.-30 B.C.
Princeton subject headings:
Just war doctrine.
Rome--History--Republic, 265-30 B.C.