Regal item soldiers put on individual in court (7)
I believe the answer is:
coronet
'regal item' is the definition.
'soldiers put on individual in court' is the wordplay.
'soldiers' becomes 'OR' (Other Ranks).
'put on' means one lot of letters go next to another.
'individual' becomes 'one' (an individual is one person).
'in' is an insertion indicator.
'court' becomes 'ct' (abbreviation used in road names).
'or'+'one'='orone'
'orone' inserted within 'ct' is 'CORONET'.
(Other definitions for coronet that I've seen before include "badge of rank" , "Sub-lieutenant" , "Simple crown" , "Headwear" , "jewelled headdress" .)