After completion, the Fum was incorporated into the 1st Cruiser Division of the 1st Team. From then on, until the Italian war in 1940, the Fum was in this unit. During the Spanish Civil War from 1936 to 1937, the Fum was active in Spanish waters. In April 1939, the Fums and Boras participated in the invasion of Albania.March 29, 1941In the Battle of Cape Matapan, it was wounded at close range by the battleships of the British Navy's battleships Breeze, Warrior and Barham, and was eventually sunk by the torpedo of the British destroyer.