''Kastrophylax'' ( gr, καστροφύλαξ, "fortress guard" or "fortress warden") was a late
Byzantine
The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...
local official who served as the assistant of the ''
kephale'' (provincial governor) in maintaining the defense of a fortified city (''
kastron'') and its guard service.
References
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Byzantine military offices
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