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Light infantry gun soldiers returned to old magazine (8)

Ross

I believe the answer is:

listener

I'm a little stuck... Click here to teach me more about this clue!

'old magazine' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.

'light infantry gun soldiers returned' is the wordplay.
'light infantry' becomes 'li' (abbreviation).
'gun' becomes 'sten' (British sub-machine gun).
'soldiers' becomes 'RE' (Royal Engineers).
'returned' says the letters should be written backwards.
're' in reverse letter order is 'er'.
'li'+'sten'+'er'='LISTENER'

'to' is the link.

Can you help me to learn more?

(Other definitions for listener that I've seen before include "One hearing" , "Someone paying attention" , "One giving attention" , "One who hears" , "Hearer" .)

I've seen this clue in The Independent.
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