During the Balkan Wars of 1912–13, he served as first officer of the ironclad "Hydra", taking part in the battles of Elli and Lemnos against the Ottoman navy, as well as the occupation of the islands of the eastern Aegean: Lemnos, Lesbos, and Thasos. He also took part in the mission of blockading the Ottoman cruiser "Hamidiye" in the Red Sea in April–May 1913.