 A Board of Inquiry found that "Hereward"s commander made a misjudgement by rejoining "Decoy", instead of engaging the Italian force without delay, which caused the failure of the main landing and the isolation of the commandos.British commanders had also been surprised by the Italian riposte, especially the frequent air attacks which were unopposed.Greene and Massignani, writing in 1998, noted the British capture of Y-I, an Italian cipher book.