Military affairs in late antiquity (bibliography supplied by Hugh Elton (Trinity College).

Austin, N. J. E., Ammianus on Warfare (Brussels, 1979)
Blockley, R. C., East Roman Foreign Policy (Leeds, 1992)
Burns, T. S., Barbarians within the Gates of Rome (Indiana, 1995)
Cameron, A. and Long, J., Barbarians and Politics at the Court of Arcadius (Berkeley, 1993)
Coulston, J. C., 'Later Roman Armour, 3rd-6th centuries AD', Journal of Roman Military Equipment Studies 1 (1990), 139-160
Dennis, G. T., Three Byzantine Military Treatises, (Washington, 1985)
Dennis, G. T., tr., Mauricius, Strategikon (Philadelphia, 1984)
Foss, C. and Winfield D., Byzantine Fortifications: An Introduction (Pretoria, 1986)
Frank, R. I., Scholae Palatinae (Rome, 1969)
Grosse, R., Romische Militargeschichte (Berlin, 1920)
Haldon, J. F., Byzantine Praetorians (Bonn, 1984)
Heather, P. J., Goths and Romans (Oxford, 1991)
Hoffmann, D., Das spätromische Bewegungsheer und die Notitia Dignitatum (Dusseldorf, 1969)
Johnson, S., Late Roman Fortifications (London, 1983)
Jones, A. H. M., The Late Roman Empire (Oxford, 1964), chapter 17
Kazanski, M. and Vallet, F., eds., L'Armée Romaine et les barbares du IIIe au VIIe siècles (Rouen, 1993)
Kolias, T., Byzantinische Waffen (Vienna, 1988)
Liebeschuetz, J. H. W. G., Barbarians and Bishops (Oxford, 1991)
MacMullen, R., Corruption and the Decline of Rome (London, 1989)
Milner, N. P., tr., Vegetius (Pennsylvania, 1993)
Redde, M., Mare Nostrum (Paris, 1986)
Teall, J., 'The Barbarians in Justinian's Armies', Speculum 40 (1965), 294-322
Tomlin, R. S. O., 'The Army of the Late Empire', in Wacher, J., ed., The Roman World (London, 1987), 107-133
Whitby, M., The Emperor Mauricius and his Historian (Oxford, 1988)

I might also add that my own 'Warfare in Roman Europe: AD 350-425' should be published by OUP in the fall, if you can wait that long!

Hugh Elton