 Still plagued by her low speed, "Kilkis" was withdrawn from flagship duties in 1930, placed in reserve in 1932, and used as a training ship until the outbreak of World War II, after which she was used as a floating battery.During the German invasion of Greece on 23 April, she was attacked and sunk by German Ju 87 Stuka dive-bombers at Salamis Naval Base, together with her sister ship "Lemnos".The two ships were ultimately raised in the 1950s and broken up for scrap.