Dramatic procession (9)
I believe the answer is:
cavalcade
'dramatic procession' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cavalcade that I've seen before include "Column or procession of riders" , "Procession on horseback or in cars" , "Procession of people riding" , "Ceremonial procession, of horses say" .)