Type that is needed for a raid (6)
I believe the answer is:
sortie
'a raid' is the definition.
(I have seen 'Military raid' mean 'sortie' so perhaps 'raid' could also mean 'sortie')
'type that is needed' is the wordplay.
'type' becomes 'sort' (I've seen this before).
'that is' becomes 'ie' (synonyms).
'needed' is a charade indicator (letters next to each other).
'sort'+'ie'='SORTIE'
'for' is the link.
(Other definitions for sortie that I've seen before include "Single military flight" , "Attack by a besieged garrison" , "Breakout by besieged garrison" , "Short trip; attack" , "Military aircraft's flight" .)