Crossword Genius

War re-enactment in which one gets decorated? (9)

Ross

I believe the answer is:

paintball

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

'one gets decorated?' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'war re-enactment in' is the wordplay.
I cannot quite understand how this works, but
'in' is within the answer.
The remaining letters 'patball' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'which' is the link.

Can you help me to learn more?

(Other definitions for paintball that I've seen before include "war game" , "messy game" , "Missile used in war games" , "simulated combat" .)

I've seen this clue in The Telegraph.
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