Area held by soldiers effectively home after 1984 (9)

I believe the answer is:

orwellian

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'after 1984' is the definition.
(I've seen this before)

'area held by soldiers effectively home' is the wordplay.
'area' becomes 'a' (maths abbreviation).
'held by' indicates putting letters inside.
'soldiers effectively' becomes 'orwell' (I am not sure about this - if you are sure you should believe this answer much more).
'home' becomes 'in' ('he's home' can mean 'he's in').
'orwell'+'in'='orwellin'
'a' put within 'orwellin' is 'ORWELLIAN'.

Can you help me to learn more?

(Other definitions for orwellian that I've seen before include "Like Napoleon, perhaps" , "after 1984" , "Related to Eric Blair?" .)

I've seen this clue in The Independent.

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