The division was sent to Cattaro in August 1914 to attack Montenegrin and French artillery that was bombarding the port, and they remained there until mid-1917. Budapest and her sister were sent to Trieste in August and bombarded Italian fortifications in the Gulf of Trieste. The ship was briefly decommissioned in early 1918 and became an accommodation ship, but she was fitted with a large siege howitzer for shore bombardment shortly afterwards and recommissioned. A shortage of ammunition caused the gun to be removed before it could be used, and Budapest reverted to her previous role. The ship was awarded to Great Britain by the Paris Peace Conference in 1920. The British sold her for scrap, and she was broken up in Italy beginning in 1921.
