Once more a member will prepare for a fight (5)

I believe the answer is:

rearm

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'prepare for a fight' is the definition.
I can't tell whether this defines the answer.

'once more a member' is the wordplay.
'once more' becomes 're' (prefix in words like 're-emerge' or 're-enter').
'a member' becomes 'arm' (member can mean a limb).
're'+'arm'='REARM'

'will' is the link.

Can you help me to learn more?

(Other definitions for rearm that I've seen before include "fit again" , "Hand new weapons" , "Provide new weaponry" , "Provide with a new supply of weapons" , "prepare for another war" .)

I've seen this clue in the Evening Standard.

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