Get weapons again to back military leader (2-3)

I believe the answer is:

re-arm

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'get weapons again' is the definition.
I can't tell whether this definition defines the answer.

'back military leader' is the wordplay.
'back' becomes 'rear' (something's rear is its back).
'leader' says to take the initial letters.
The first letter of 'military' is 'm'.
'rear'+'m'='RE-ARM'

'to' acts as a link.

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