Service from operative's perspective (7)
I believe the answer is:
vespers
'service' is the definition.
(vespers is a church service)
'from operative's perspective' is the wordplay.
'from' says the answer is hidden in the clue.
'VESPERS' is hidden within 'operatives perspective'.
(Other definitions for vespers that I've seen before include "Evensong - RC service" , "Evening prayers" , "An hour of worship" , "Evening service" .)