V-sign from revolutionary very wrong after shelling (7)
I believe the answer is:
chevron
'v-sign' is the definition.
(I've seen this before)
'revolutionary very wrong after shelling' is the wordplay.
'revolutionary' becomes 'Che' (Che Guevara the Marxist revolutionary).
'very' becomes 'v' (common abbreviation).
'after shelling' means to look at the middle letters (the outer letters or shell are removed).
The centre of 'wrong' is 'ron'.
'che'+'v'+'ron'='CHEVRON'
'from' is the link.
(Other definitions for chevron that I've seen before include "shape?" , "pointed symbol" , "V-shaped band" , "V-shaped design" , "Stripes" .)