Something discovered during the War of Independence (4)

I believe the answer is:

find

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'something discovered' is the definition.
I can't judge whether this definition defines the answer.

'during the war of independence' is the wordplay.
'during' indicates a hidden word.
'FIND' can be found hidden inside 'war of independence'.

Can you help me to learn more?

(Other definitions for find that I've seen before include "Track down" , "Discovery" , "Come across" , "Acquisition" , "Locate or discover" .)

I've seen this clue in the Evening Standard.

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