After Sarantaporo he was placed as commander in the 9th Battalion of the 1st Evzone Regiment. Velissariou then was transferred to the Epirus front and was deployed at the east flank, in the Aetorachi sector. On February 19, 1913, the Greek headquarters ordered a general attack against the Ottoman fortifications in Bizani, which covered the city of Ioannina. The Evzone battalions of Velissariou and Georgios Iatridis penetrated rapidly north and managed to cut off the only escape route of the enemy troops with the capture of the village of Agios Ioannis, between Bizani and Ioannina. Soon the Ottoman headquarters in Ioannina, was unable to transmit any communication message to the Ottoman forts, causing major panic. In the following night, the units of Velissariou and Iatridis managed to capture 37 officers and 935 soldiers in their attempt to withdraw north. As a result, the next day, the Ottoman commander Esad Pasha surrendered, while Velissariou personally led the Ottoman delegation to the Greek headquarters.