Lack of movement in battle... (8)

I believe the answer is:

inaction

'lack of movement' is the definition.
(I've seen this before)

'in battle' is the wordplay.
'battle' becomes 'action' (military action).
'in'+'action'='INACTION'

(Other definitions for inaction that I've seen before include "Failure to do anything" , "Passivity, doing nothing" , "Dormancy" , "Sloth" , "Idleness - fighting" .)

I've seen this clue in The Irish News.

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