Crossword Genius

Battle member, acting as witness (7)

Ross

I believe the answer is:

viewing

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

'acting as witness' is the definition.
I can't judge whether this defines the answer.

'battle member' is the wordplay.
'battle' becomes 'vie'.
'member' becomes 'wing' (wing is a kind of member).
'vie'+'wing'='VIEWING'

Can you help me to learn more?

(Other definitions for viewing that I've seen before include "What's done in front of the TV" , "Surveying" , "people in front of TV?" , "Opportunity to see" .)

I've seen this clue in The Telegraph.
Want a hint initially instead of a full solution? Install my app