Clue: Revolutionary wrong to turn to the left (4)
Answer: TROT
Explanation: Revolutionary wrong to turn to the left (4)

[revolutionary] **TORT** ("wrong")
 

 
*Not aware of TROT meaning "to turn to the left". Become a Trot, possibly, but not trot on its own. Buccaneer may be asking us to do something with TO RT (to the right, being "wrong", so to the left, but if so, it's not obvious from the wordplay.