Six men leading raiders (7)
I believe the answer is:
vikings
'raiders' is the definition.
The definition and answer can be both people as well as being plural nouns.
Perhaps they are linked in a way I don't understand?
'six men leading' is the wordplay.
'six' becomes 'VI' (Roman numerals).
'men' becomes 'kings' (king is a kind of man).
'leading' means one lot of letters go next to another.
'vi'+'kings'='VIKINGS'
Can you help me to learn more?
(Other definitions for vikings that I've seen before include "Scandinavian marauders" , "Invaders" , "Scandinavian adventurers who attacked Ireland" , "Norsemen" .)