Battle of Eisenach: An invading Hungarian force defeats an East Frankish army under Duke Burchard of Thuringia.

The Battle of Eisenach in 908, was a crushing victory by a Hungarian army over an East Frankish army composed of troops from Franconia, Saxony, and Thuringia.

The Grand Principality of Hungary or Duchy of Hungary was the earliest documented Hungarian state in the Carpathian Basin, established in 895 or 896, following the 9th century Magyar invasion of the Carpathian Basin.

East Francia or the Kingdom of the East Franks was a successor state of Charlemagne's empire created in 843 and ruled by the Carolingian dynasty until 911. It was established through the Treaty of Verdun (843) which divided the former empire of Francia into three kingdoms: Francia Orientalis ; Francia Media ; and Francia Occidentalis.

Burchard was the Duke of Thuringia from shortly after 892 until his death. He replaced Poppo as duke shortly after his appointment in 892, but the reasons for Poppo's leaving office are unknown. Burchard may have been a Swabian.

Thuringia is one of Germany's 16 states. With 2.1 million people, it is 12th-largest by population, and with 16,171 square kilometers, it is 11th-largest in area.