The first actual battle of the rebellion occurred on November 15 north of Balıkesir.[4] Anzavur's forces took heavy losses and were forced to retreat north through Susurluk, whilst being pursued by Köprülülü Hamdi.[4] By the twentieth, fighting had broken out around Gönen, Manyas, Karacabey, Biga, and Susurluk.[4] By the end of November, Anzavur's forces had to flee from Çerkes Ethem's forces.[5] As winter approached, Anzavur disbanded his forces who melted into surrounding areas.[4]