 Greene and Massignani, writing in 1998, noted the British capture of Y-I, an Italian cipher book.In 2009, Vincent O'Hara wrote that the operation showed that the Italians dominated the seas around even their outlying bases and that this was not to be the last time that the British underestimated them.The Italians retained control of the Dodecanese Islands until the armistice of September 1943.