and they also recovered the region of Sirmium (called Frangochorion in Choniates), which had been Hungarian since the 1060s. The Hungarian pretender Álmos died in 1129, removing the major source of friction. See also Komnenian Byzantine army References Sources Primary Secondary Lau, M.C.G. (2016) The Naval Reform of Emperor JohnII Komnenos: a Re-evaluation, Mediterranean Historical Review, 31:2, 115-138, DOI:10.1080/09518967.2016.1248641, https://doi.org/10.1080/09518967.2016.1248641 Stephenson, Paul (2000) Byzantium's Balkan Frontier: A Political Study of the Northern Balkans, 900-1204, Cambridge University Press. Battles involving the Byzantine Empire Komnenos dynasty 12th century in Serbia Battles involving Hungary in the Middle Ages Battles involving Serbia in the Middle Ages History of Banat Medieval history of Vojvodina Haram 1128 in Europe 1120s in the Byzantine Empire Grand Principality of Serbia John II Komnenos