Archduke Ferdinand

"Archduke Franz Ferdinand, nephew of Emperor Franz Josef and heir to the Austro-Hungarian Empire, is shot to death along with his wife by a Serbian nationalist in Sarajevo, Bosnia, on this day in 1914."
"The archduke traveled to Sarajevo in June 1914 to inspect the imperial armed forces in Bosnia and Herzegovina, former Ottoman territories in the turbulent Balkan region that were annexed by Austria-Hungary in 1908 to the indignation of Serbian nationalists, who believed they should become part of the newly independent and ambitious Serbian nation."
Assassination of the Archduke Franz Ferdinand