Crossword Genius

Buried treasure originally hidden by soldier at ground (4,2,4)

Ross

I believe the answer is:

laid to rest

'buried' is the definition.
('lay to rest' can be a synonym of 'bury')

'treasure originally hidden by soldier at ground' is the wordplay.
I cannot really see how this works, but
'soldier' could be 're' and 're' is found in the answer.
This explanation may well be incorrect...

(Another definition for laid to rest that I've seen is " Relieved".)

I've seen this clue in The Guardian.
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