Silent when moving? Join the commandos! (6)

I believe the answer is:

enlist

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'join the commandos' is the definition.
'enlist' can be an answer for 'join' (I've seen this in another clue). I'm unsure of the 'the commandos' bit.

'silent when moving?' is the wordplay.
'when moving?' indicates an anagram (I've seen this in other clues).
'silent' with letters rearranged gives 'ENLIST'.

Can you help me to learn more?

(Other definitions for enlist that I've seen before include "Take the Queen's shilling" , "Join up in silent way" , "Enrol in the services" , "Obtain help of" , "Engage" .)

I've seen this clue in The Sun.

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