Banished, being no longer the one who was in command (6)
I believe the answer is:
exiled
'banished' is the definition.
(I've seen this before)
'no longer the one who was in command' is the wordplay.
'no longer' becomes 'ex' (prefix meaning former or onetime).
'the one who' becomes 'i' (I can't explain this - if you can you should give a lot more credence to this answer).
'was in command' becomes 'led' (I've seen this in another clue).
'ex'+'i'+'led'='EXILED'
'being' is the link.
Can you help me to learn more?
(Other definitions for exiled that I've seen before include "Sent to live abroad" , "Sent away" , "Banished from homeland" , "Forced to live in another country" , "Cast out" .)