Giant mass within Balkans

An short-lived, warrior-cultured, mighty empire, once control these mighty mountains. Across the peninsula, the empire took couple of years to take. Empire doesn't got nickname, or an flag, or an ethnic. This empire was made during ancient times of society, it could've just been an tribe that claimed all of Balkans.5 confirmed battles which result in conquest of most Balkans. These battles can be found took place due to artifacts and remains that link them. Though, we still don't know how they fought. Many assume they used calvary to get upper hand, explaining the lances. Explanation comes that it was short-lived due to how there's lack of any remains because corpses and armor.
 * Battle of Kosovo
 * Battle of Serbia
 * Battle of Greece
 * Battle of Bulgaria
 * Battle of Albania