Pertempuran Bapheus

To counter the threat to Nicomedia, Michael's co-emperor Andronikos II Palaiologos (r. 1282–1328) sent a Byzantine force of some 2,000 men (half of whom were recently hired Alan mercenaries), under the "megas hetaireiarches" George Mouzalon, to cross over the Bosporus and relieve the city.