Crossword Genius

Elite soldiers police volunteers without aggression (7,6)

Ross

I believe the answer is:

special forces

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

'elite soldiers police' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'volunteers without aggression' is the wordplay.
'volunteers' becomes 'specials' (I can't justify this - if you can you should believe this answer much more).
'without' is an insertion indicator ('without' can be similar in meaning to 'outside').
'aggression' becomes 'force' (force is a kind of aggression).
'specials' placed around 'force' is 'SPECIAL FORCES'.

Can you help me to learn more?

(Another definition for special forces that I've seen is " Eg, SAS, SBS".)

I've seen this clue in The Independent.
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