Crossword Genius

Small company having unusually short Roman soldiers (7)

Ross

I believe the answer is:

cohorts

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'roman soldiers' is the definition.
Although both the answer and definition are plural nouns, I don't understand how one could define the other.

'small company having unusually short' is the wordplay.
'small company' becomes 'co' (abbreviation; 'small' indicates a short form).
'having' is a charade indicator (letters next to each other).
'unusually' indicates anagramming the letters.
'short' anagrammed gives 'horts'.
'co'+'horts'='COHORTS'

Can you help me to learn more?

(Other definitions for cohorts that I've seen before include "Partners" , "Henchmen" .)

I've seen this clue in The Globe and Mail.
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