The Battle of Thasos was fought on October 829 between the fleets of the
Byzantine Empire
The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...
and the newly founded
Emirate of Crete
The Emirate of Crete ( ar, إقريطش, Iqrīṭish or , ''Iqrīṭiya''; gr, Κρήτη, Krētē) was an Islamic state that existed on the Mediterranean island of Crete from the late 820s to the reconquest of the island by the Byzantine Empi ...
. The Cretan Arabs scored a major victory: ''
Theophanes Continuatus
''Theophanes Continuatus'' ( el, συνεχισταί Θεοφάνους) or ''Scriptores post Theophanem'' (, "those after Theophanes") is the Latin name commonly applied to a collection of historical writings preserved in the 11th-century Vat. g ...
'' records that almost the entire imperial fleet was lost. This success opened up the Aegean to the Saracens' raids. The
Cyclades
The Cyclades (; el, Κυκλάδες, ) are an island group in the Aegean Sea, southeast of mainland Greece and a former administrative prefecture of Greece. They are one of the island groups which constitute the Aegean archipelago. The name ...
and other islands were pillaged, and
Mount Athos was so devastated that it was deserted for a long time.
Sources
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{{coord missing, Greece
Thasos
Thasos or Thassos ( el, Θάσος, ''Thásos'') is a Greek island in the North Aegean Sea. It is the northernmost major Greek island, and 12th largest by area.
The island has an area of and a population of about 13,000. It forms a separate r ...
Thasos
Thasos or Thassos ( el, Θάσος, ''Thásos'') is a Greek island in the North Aegean Sea. It is the northernmost major Greek island, and 12th largest by area.
The island has an area of and a population of about 13,000. It forms a separate r ...
Thasos
Thasos or Thassos ( el, Θάσος, ''Thásos'') is a Greek island in the North Aegean Sea. It is the northernmost major Greek island, and 12th largest by area.
The island has an area of and a population of about 13,000. It forms a separate r ...
820s in the Byzantine Empire
Medieval Aegean Sea
Thasos
829
Thasos
Thasos or Thassos ( el, Θάσος, ''Thásos'') is a Greek island in the North Aegean Sea. It is the northernmost major Greek island, and 12th largest by area.
The island has an area of and a population of about 13,000. It forms a separate r ...