Soldiers right to work outside (5)
I believe the answer is:
troop
'soldiers' is the definition.
(thesaurus)
'right to work outside' is the wordplay.
'right' becomes 'r' (common abbreviation).
'work' becomes 'op' (abbreviation for opus).
'outside' is an insertion indicator.
'to'+'op'='toop'
'r' going into 'toop' is 'TROOP'.
(Other definitions for troop that I've seen before include "Body of soldiery" , "Gang" , "musical group perhaps" , "Large group (of soldiers?)" , "Flock, large group" .)