First Balkan War With the outbreak of the
Balkan Wars, Velissariou was appointed commander in the 3rd Battalion of the 4th Infantry Regiment. At the
Battle of Sarantaporo he managed to advance rapidly with his unit against the Ottoman forces and cut their withdrawal, causing general unrest to the enemy. 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.
Second Balkan War . Velissariou participated in the
Second Balkan War against Greece's erstwhile ally
Bulgaria, initially in the
Battle of Lachanas and then in the
Battle of Kresna Gorge. Although the sector suffered constant attacks by the
Bulgarian Army, the Evzones managed to repel them. During the time of 13–15 July, the Regiment suffered numerous casualties; Major Velissariou was one of the officers killed. He was buried near the battle site. ==References==