After the end of World War I "Kilkis" saw service in the Allied intervention in the Russian Civil War in the Black Sea. While supporting the French and British forces defending Sevastopol in April 1919, "Kilkis" observed mutinies on several French battleships. Her crew taunted the French mutineers by hanging a dummy from the yardarm. "Kilkis" then returned to Greece. During the subsequent Greco-Turkish War, "Kilkis" served in support of landings to seize Ottoman territory. On 15 May 1919, she and a pair of destroyers escorted a convoy of six transports carrying the troops that undertook the occupation of Smyrna and its environs. "Kilkis" carried Rear Admiral Kaloulides, who thereafter served as the military governor of the city. The Ottoman Navy had been interned by the Allies after the end of World War I, and so provided no opposition to the Royal Hellenic Navy's activities.