Crossword Genius

Part of Beaverbrook in a war's campaign (7)

Ross

I believe the answer is:

okinawa

'campaign' is the definition.
(Okinawa is an example)

'part of beaverbrook in a war's' is the wordplay.
'part of' indicates a hidden word.
'OKINAWA' is hidden in the letters of 'beaverbrook in a wars'.

(Other definitions for okinawa that I've seen before include "island out east" , "Island of S. Japan" , "battle!" , "Pacific island" , "Japanese island, capital Naha" .)

I've seen this clue in The Telegraph.
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