Revolutionary army returning to wreck (5)
I believe the answer is:
marat
'revolutionary' is the definition.
(French revolutionary Jean-Paul Marat)
'army returning to wreck' is the wordplay.
'army' becomes 'ta' (abbreviation for Territorial Army).
'returning' is a reversal indicator.
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'wreck' becomes 'mar' (I've seen this before).
'ta' back-to-front is 'at'.
'at' put after 'mar' is 'MARAT'.
(Other definitions for marat that I've seen before include "murdered radical" , "Jean Paul -, assassinated French revolutionary" , "French revolutionary politician" , "Charlotte Corday murdered him in his bath" , "Charlotte Corday victim" .)