JB Bury (1861-1927) was Professor of Modern History, then of Greek, at Cambridge, but his most important contributions were to the study of Late Antiquity. This book brings together a series of lectures on the long period of migrations from the fourth to sixth centuries; with a focus on military matters, they examine how Germans, Visigoths, Gauls, Ostrogoths and Franks took control of Europe as the power and influence of the Roman Empire waned.