Original:  Although Phillips had acted without authority , after his death a British punitive force deposed the Benin monarchy, pillaged Benin City and took many riches including the Benin Bronzes back to Britain . Aftermath The British Admiralty responded swiftly to the Benin Massacre by authorizing the Benin Punitive Expedition of February 1897.
Revised:  Although Phillips had acted without consulting the Royal Niger Company authorities , after his death a British punitive force deposed the Benin monarchy, pillaged Benin City and took many riches including the Benin Bronzes back to Britain . Aftermath The British Admiralty responded swiftly to the Benin Massacre by authorizing the Benin Punitive Expedition of February 1897.
Edit intent: meaning-changed