The first supposed reference to the Hungarians in war is in the 9th century: in 811, the Hungarians (Magyars) were in alliance with Krum of Bulgaria against Emperor Nikephoros I possibly at the Battle of Pliska in the Haemus Mountains (Balkan Mountains) [REF].
Around 896,[REF] probably under the leadership of Árpád, the Hungarians (Magyars) crossed the Carpathians and entered the Carpathian Basin (the plains of Hungary, approximately).