Byzantine–Seljuk wars: Byzantine forces defeated their Seljuk opponents in the flanks of the nocturnal Battle of Kapetron, but learned of their Georgian allies' defeat in the centre the next morning. Byzantine Empire: The Byzantine Empire, also known as the Eastern Roman Empire, was the continuation of the Eastern part of the Roman Empire centred on Constantinople during late antiquity and the Middle Ages. Having survived the fall of the Western Roman Empire in the 5th century AD, it endured until the fall of Constantinople to the Ottoman Empire in 1453. The term 'Byzantine Empire' was coined only after its demise; its citizens used the term 'Roman Empire' and called themselves 'Romans'. September 18, 1048. Wiki link