Operation Shed was a British plan for military intervention in Zanzibar following the 1964 Zanzibar revolution. It was one of a series of operations devised by the British to be implemented in the case of an attempt to seize power from President Abeid Karume by the radical left-wing Umma Party. Shed succeeded the earlier Operations Parthenon and Boris and was an alternative to Operation Finery. Shed would have involved an airlift of a battalion of troops to Unguja to provide support to Karume and to protect European citizens. The risk of a coup passed by 29 April 1964 and it was determined that any intervention would be opposed by Karume's forces and a Soviet training team. With this in mind Shed was modified on 9 June to an airborne assault by Royal Marine commandos from HMS Centaur, whic