The Navy of the Kingdom of Serbs, Croats and Slovenes – from 1929, the Royal Yugoslav Navy – included a wide range of vessels during its existence from 1920 to 1945, including sea-going warships and river monitors that operated on the Danube and other rivers. In 1921, the only modern warships were twelve torpedo boats. Early in its history, little was done to improve the fleet, but modernisation was underway from the early 1930s, with a British-made flotilla leader followed by a class of modern French-designed destroyers. Almost all of the fleet was captured by Italy during the April 1941 Axis invasion of Yugoslavia, but a few vessels escaped to form a navy-in-exile, which operated under British supervision. Later in the war, several vessels that had been in Italian service were returned to the navy-in-exile, and these were joined by a British corvette. At the end of the war, these vessels were transferred to the fledgling Yugoslav Navy. (Full list...)