Note 39 — III. The Byzantines and their Enemies.28 A.D. 582–1071.

In Leo’s day the Oriental themes had not been sub-divided, as was afterwards done by his son Constantine. There were then eight themes in Asia Minor, each of which contained a military division of the same name, and could be reckoned on for some 4000 heavy cavalry. These were ‘Armeniacon, Anatolicon, Obsequium, Thracesion, Cibyrrhœot, Bucellarion, and Paphlagonia.’ Optimaton, the ninth theme, had (as Constantine tells us in his treatise on the empire), no military establishments.