Setting the numbers quietly with a soldier country (10)

I believe the answer is:

pagination

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'setting the numbers quietly with a soldier country' is the definition.
I can't tell whether this defines the answer.

'quietly with a soldier country' is the wordplay.
'quietly' becomes 'p' (p for piano and quiet).
'with' means one lot of letters go next to another.
'soldier' becomes 'GI' (GI can mean a US soldier).
'country' becomes 'nation' (synonyms).
'p'+'a'+'gi'+'nation'='PAGINATION'

Can you help me to learn more?

(Another definition for pagination that I've seen is " marking numbers on documents".)

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

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