On the Danube, river monitors were employed during World War I by Austria-Hungary and Romania. The Austro-Hungarian river monitor "Bodrog" fired the first shots of World War I, against the city of Belgrade, and later also fought in the Romanian Campaign, notably during the Flămânda Offensive in October 1916, when she was damaged. Another river monitor, "Körös", was also heavily damaged by Romanian artillery, taking 12 hits and ran aground after her steam lines were severed. On 22 September 1917, the "Enns"-class river monitor "Inn" was sunk by a Romanian mine near Brăila. She was refloated but her repairs were not completed before the War ended, and she was eventually handed over to Romania as war reparation, being renamed "Basarabia".