principality Michael III (1860-) 1866 Milan IV (1868-) 1874 kingdom (1882-) 1880 Alexander I (1889-) 1894 Peter I (1903-) 1905 1911 1914 1914 WWI 1915 occupation 1916 liberation 1918 Kingdom SCS 1918-1929 Yugoslavia 1929-1941 Nedic (1941-1944) 1942 1943 1943 1943 Yugoslavia 1945-2003 Serbia and Montenegro (2003-) wish2003 2005 republic (2006-) wish2006 2013