Spies taking rebellious soldiers in films (6)
I believe the answer is:
cinema
'films' is the definition.
(I've seen this before)
'spies taking rebellious soldiers' is the wordplay.
'spies' becomes 'cia'.
'taking' is an insertion indicator.
'rebellious' shows that the letters should be reversed in order.
'soldiers' becomes 'men' (I've seen this before).
'men' backwards is 'nem'.
'cia' placed around 'nem' is 'CINEMA'.
'in' acts as a link.
(Other definitions for cinema that I've seen before include "multiplex, perhaps" , "Film theatre" , "Iceman (anag)" , "Movies, pictures" , "Screening" .)