Imperial and Royal Military Administration in Serbia Imperial and Royal Military Administration in Serbia The K.u.k. Military Administration in Serbia (German: K.u.k. Militärverwaltung in Serbien) was the Austro-Hungarian military administration in the Kingdom of Serbia from 1915 to 1918. It was formed by the Central Powers during World War I. On 28 June 1914 Serbian nationalist Gavrilo Princip assassinated Archduke Franz Ferdinand in Sarajevo. This led to the diplomatic July Crisis between Austria-Hungary and the Kingdom of Serbia which ultimately led to a declaration of war by Austria-Hungary on July 28. The first Austro-Hungarian forays into Serbia began in August. After disappointing results at the Battle of
Austria–Russia relations Treaty of Berlin. While Russia eventually backed down, relations between the two Empires were permanently damaged. The lasting result was bitter enmity between Austria-Hungary on one side and Serbia and Russia on the other. Following the assassination of Archduke Franz Ferdinand of Austria by Serb nationalists of the Black Hand secret society on 28 June 1914, Austria delivered the July Ultimatum to Serbia demanding that the Austrian police and military have the right to enter Serbia. Serbia rejected the ultimatum and on 28 July 1914, Austria-Hungary declared war on Serbia. On August 6, the Emperor Franz Joseph signed the Austro-Hungarian