Crossword Genius

Soon relieved with riddles worked out? Their successes aren't remembered (3,8,5,3)

Ross

I believe the answer is:

old soldiers never die

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'soon relieved with riddles worked out? their successes aren't remembered' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'soon relieved with riddles worked out?' is the wordplay.
'with' is a charade indicator (letters next to each other).
'worked out?' indicates an anagram (I've seen 'worked out' mean this).
'soon'+'relieved'+'riddles'='soonrelievedriddles'
'soonrelievedriddles' is an anagram of 'OLD SOLDIERS NEVER DIE'.

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I've seen this clue in The Times.
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