Serbian Retreat During World War 1
World War 1 started because of the conflict between Serbia and the Austro-Hungarian Empire. What would otherwise have been a small regional conflict, developed into a world wide bloodbath once the Great Powers aligned themselves with or against Serbia. At first the Serbs were completely overmatched and most of their country was occupied by the Central Powers. However the King and the remnant of his army managed to retreat to Greece and Albania, where, supported by the French and British, they were able to hang on and eventually regroup.