
First king of the Serbs Croats and Slovenes.
Compare Peter I of Serbia with another historical figure:
Peter I Kara
King Peter I led Serbia during the First and Second Balkan Wars, which resulted in the expansion of Serbian territory and the expulsion of the Ottoman Empire from most of the Balkans. Serbia emerged as a regional power.
After the Austro-Hungarian and German invasion of Serbia, King Peter I led the Serbian army and government on a retreat through the mountains of Albania to the Adriatic coast. The retreat was a humanitarian disaster but preserved the army for future campaigns.
Following the end of World War I, King Peter I was proclaimed King of the newly formed Kingdom of Serbs, Croats, and Slovenes (later Yugoslavia). This united South Slavic peoples under a single monarchy.
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