29 - Collapse in the West and survival in the East (395–476 AD).

Collapse in the West and survival in the East (395–476 AD).  The non-federated mobile field army, known as the comitatenses, was eventually split into a number of smaller field armies: a central field army under the emperor's direct control, known as the comitatensis palatina or praesentalis, and several regional field armies. Historians Santosuosso and Vogt agree that the latter gradually degraded into low-quality garrison units similar to the limitanei that they either supplemented or replaced. By the 5th century, a significant portion of Western Rome's main military strength lay in rented barbarian mercenaries known as foederati.  As the 5th century progressed, many of the Empire's original borders had been either wholly or partially denuded of troops to support the central field army. In 395, the Western Roman Empire had several regional field armies in Italy, Illyricum, Gallia, Britannia and Africa, and about twelve border armies. By about 430, two more field armies were established in Hispania and Tingitania but the central government had lost control of Britannia as well as much of Gaul, Hispania, and Africa. In the same period, the Eastern Roman Empire had two palatine field armies (at Constantinople), three regional field armies (in the East, in Thrace, and in Illyricum) and fifteen frontier armies.  As Roman troops were spread increasingly thin over its long border, the Empire's territory continued to dwindle in size as the population of the empire declined. Barbarian war bands increasingly began to penetrate the Empire's vulnerable borders, both as settlers and invaders. In 451, the Romans defeated Attila the Hun, but only with assistance from a confederation of foederatii troops, which included Visigoths, Franks and Alans. As barbarian incursions continued, some advancing as far as the heart of Italy, Rome's borders began to collapse, with frontier forces swiftly finding themselves cut off deep in the enemy's rear.  Simultaneously, barbarian troops in Rome's pay came to be "in a condition of almost perpetual turbulence and revolt" from 409 onwards. In 476 these troops finally unseated the last emperor of the Western Roman Empire. The Eastern Roman forces continued to defend the Eastern Roman (Byzantine) Empire until its fall in 1453.  The former Oxford University historian Adrian Goldsworthy has argued that the cause of the fall of the Roman Empire in the West should not be blamed on barbarization of the late Roman Army, but on its recurrent civil wars, which led to its inability to repel or defeat invasions from outside its frontiers. The East Roman or Byzantine empire on the other hand had fewer civil wars to contend with in the late fourth and early fifth centuries, or in the years from 383 to 432 A.D. Wikipedia: Text is available under the Creative Commons Attribution-ShareAlike 4.0 License.This episode includes AI-generated content.