The Battle of Cape Matapan (Greek: Ναυμαχία του Ταίναρου) was a Second World War naval engagement fought from 27–29 March 1941. The cape is on the south-west coast of the Peloponnesian peninsula of Greece. Italian signals were intercepted and broken by the Government Code and Cypher School (GC&CS) at Bletchley Park. British ships of the Royal Navy and Royal Australian Navy, under the command of Admiral Andrew Cunningham, intercepted and sank or severely damaged several ships of the Italian Regia Marina under Squadron-Vice-Admiral Angelo Iachino. The opening actions of the battle are also known in Italy as the Battle of Gaudo.