The Battle of the Unstrut River is said to have been fought in 531 CE near the river

Unstrut The Unstrut () is a river in Germany and a left tributary of the Saale. The Unstrut originates in northern Thuringia near Dingelstädt (west of Kefferhausen in the Eichsfeld area) and its catchment area is the whole of the Thuringian Basin. It ...

when the king of

Francia Francia, also called the Kingdom of the Franks ( la, Regnum Francorum), Frankish Kingdom, Frankland or Frankish Empire ( la, Imperium Francorum), was the largest post-Roman barbarian kingdom in Western Europe. It was ruled by the Franks dur ...

Theuderic I __NOTOC__ Theuderic I (c. 485 – 533/34) was the Merovingian king of Metz, Rheims, or Austrasia—as it is variously called—from 511 to 533 or 534. He was the son of Clovis I and one of his earlier wives or concubines (possibly a Franc ...

decisively defeated the

Thuringii The Thuringii, Toringi or Teuriochaimai, were an early Germanic people that appeared during the late Migration Period in the Harz Mountains of central Germania, a region still known today as Thuringia. It became a kingdom, which came into confl ...

army led by their king

Hermanfrid Hermanfrid (also Hermanifrid or Hermanafrid; , died 532) was the last independent king of the Thuringii in present-day Germany. He was one of three sons of King Bisinus and the Lombard Menia. His siblings were Baderic; Raicunda, married to the L ...

. Thuringia was subjugated soon after the battle.

References

531 530s conflicts Unstrut River Military history of Germany Unstrut River 6th century in Germany 6th century in Francia {{Germany-hist-stub