Columbia subject headings:
Harvard subject headings:
Military art and science--Rome.
Rome--Army.
Rome--History, Military--30 B.C.-476 A.D.
Princeton subject headings:
Excavations (Archaeology)--Rome.
Manpower policy--Rome.
Rome--History, Military--30 B.C.-476 A.D.
Rome--History--Empire, 284-476.
Rome--Military antiquities.