Crossword Genius

Gardener is throwing out some guards (10)

Ross

I believe the answer is:

grenadiers

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'out some guards' is the definition.
The definition and answer can be both people as well as being plural nouns.
Perhaps there's a link between them I don't understand?

'gardener is throwing' is the wordplay.
'throwing' is an anagram indicator (letters get thrown around).
'gardener'+'is'='gardeneris'
'gardeneris' with letters rearranged gives 'GRENADIERS'.

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I've seen this clue in the Sydney Morning Herald.
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