Reddit reviews Warfare in Roman Europe, AD 350-425 (Oxford Classical Monographs)

It's hard to flesh out the barbarian factions since there is so much that is not known about them. Archaeological evidence is scarce and there is essentially no indigenous literature. Germania was inhabited by dozens of tribes yet almost everything that we know about the barbarians comes from Roman sources. If you're interested in the barbarians of the later Roman Empire, I recommend the book Warfare in Roman Europe, AD 350-425 by Hugh Elton.

For the late Roman army, I would suggest Hugh Elton's [Warfare in Roman Europe, A.D. 350-425] (http://www.amazon.com/Warfare-Europe-350-425-Classical-Monographs/dp/0198152418/ref=sr_1_1?ie=UTF8&qid=1395619490&sr=8-1&keywords=warfare+in+roman+europe). It really is one of the best books on the subject. I would also suggest Christopher Kelly's [Ruling the Later Roman Empire] (http://www.amazon.com/Ruling-Later-Empire-Revealing-Antiquity/dp/0674022440/ref=sr_1_1?ie=UTF8&qid=1395619611&sr=8-1&keywords=ruling+the+later+roman+empire+by+christopher+kelly), which provides an in-depth examination of the bureaucracy and administrative apparatus of the later Empire during the third, fourth, and fifth centuries.