Conscript gets silent treatment (6)
I believe the answer is:
enlist
'conscript' is the definition.
(thesaurus)
'silent treatment' is the wordplay.
'treatment' is an anagram indicator.
'silent' is an anagram of 'ENLIST'.
'gets' is the link.
(Other definitions for enlist that I've seen before include "Obtain help of" , "Enrol in armed forces" , "Sign on -- 13 (anag)" , "Register" , "Engage" .)