The Battle of Lechfeld, also known as the Second Battle of Lechfeld, was a series of military engagements over the course of three days from 10–12 August 955 in which the Kingdom of Germany, led by King Otto I the Great, fought the Hungarian army led by Harka Bulcsú and the chieftains Lél and Súr. The traditional view is that with the German victory, further invasions by the Magyars into Latin Europe ended, although it is more accurate to say that the battle resulted in a stalemate between the Hungarians and Germans over the next several decades.
The Hungarians invaded the Duchy of Bavaria in late June or early July 955 with 8,000–10,000 horse archers, infantry, and siege engines, intending to draw the main German army, under Otto I, into battle in the open field and destroy it. The Hungarians laid siege to Augsburg on the river Lech. Otto I advanced to relieve the city with an army of 8,000 heavy cavalry and infantry, divided into eight legions.