Crossword Genius

Which officer is body-related? (8)

Ross

I believe the answer is:

corporal

I'm a little stuck... Click here to teach me more about this clue!

'body-related?' is the definition.
I can't tell whether this definition defines the answer.

'which officer' is the wordplay.
I cannot quite understand how this works, but
'officer' could be 'co' (Commanding Officer abbreviation) and 'co' is found in the answer.
This explanation may well be incorrect...

'is' acts as a link.

Can you help me to learn more?

(Other definitions for corporal that I've seen before include "in the flesh" , "NCO rank below sergeant" , "Non-commissioned officer below sergeant" , "Of the body, say punishment" , "Bodily" .)

I've seen this clue in the Sydney Morning Herald.
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