Orderly in Byzantine attack (4)

I believe the answer is:

neat

'orderly' is the definition.
(I know that orderly can be written as neat)

'in byzantine attack' is the wordplay.
'in' indicates a hidden word.
'NEAT' can be found hidden inside 'byzantine attack'.

(Other definitions for neat that I've seen before include "Tidy and uncluttered" , "efficient" , "Tidy - old cow!" , "Old cattle" , "Steer - straight - trim" .)

I've seen this clue in The Sun.

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