 Andranik participated in the First Balkan War of 1912–1913 alongside Garegin Nzhdeh as a Chief Commander of 12th Battalion of Lozengrad Third Brigade of the Macedonian-Adrianopolitan militia under the command of Colonel Aleksandar Protogerov.His detachment consisted of 273 Armenian volunteers, which was more than half of the 531 non-Macedonian born fighters in the group.On October 20, the Macedonian-Adrianopolitan militia and Andranik's volunteer detachment, tight circle around Edirne and surrendered Yaver Pasha's forces.