Columbia subject headings:
Harvard subject headings:
Celts--History, Military.
Europe--History, Military.
Europe--History--To 476.
Germanic peoples--History, Military.
Roman provinces--History.
Rome--Boundaries--History.
Rome--History, Military--30 B.C.-476 A.D.
Rome--History--Germanic Invasions, 3rd-6th centuries.
Princeton subject headings:
Celts--History, Military.
Europe--History, Military.
Europe--History--To 476.
Germanic peoples--History, Military.
Roman provinces--History.
Rome--Boundaries--History.
Rome--History, Military--30 B.C.-476 A.D.
Rome--History--Germanic Invasions, 3rd-6th centuries.