Ready for action, wife carrying weapons on horseback (6,2)

I believe the answer is:

warmed up

'ready for action' is the definition.
(eg ready for exercise)

'wife carrying weapons on horseback' is the wordplay.
'wife' becomes 'w'.
'carrying weapons' becomes 'armed' (someone carrying a weapon is armed).
'on horseback' becomes 'up' (up can mean up on a horse).
'w'+'armed'+'up'='WARMED-UP'

(Another definition for warmed up that I've seen is " Practised".)

I've seen this clue in The Telegraph.

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