the Hungarian force on 10 August 955 at the Battle of Lechfeld. Under Otto's command were Burchard III, Duke of Swabia and Bohemian troops of Duke Boleslaus I. Though outnumbered nearly two to one, Otto was determined to push the Hungarian forces out of his territory. According to Widukind of Corvey, Otto "pitched his camp in the territory of the city of Augsburg and joined there the forces of Henry I, Duke of Bavaria, who was himself lying mortally ill nearby, and by Duke Conrad with a large following of Franconian knights. Conrad's unexpected arrival encouraged the warriors so much that they wished to attack the enemy immediately." The Hungarians crossed the river and immediately attacked the Bohemians, followed by the Swabians under Burchard. Confusing the defenders with a rain of arrows, they plundered the baggage train and made many captives. As Otto received word of the attack, he ordered Conrad to relieve his rear units with a counter-attack. Upon the successful completion of his mission, Conrad returned to the main forces and the King launched an immediate assault. Despite a volley of arrows, Otto's army smashed into the Hungarian lines and was able to fight them in hand-to-hand combat, giving the traditionally nomadic warriors no room to use their preferred shoot-and-run tactics; the Hungarians suffered heavy losses and were forced to retreat in disorder. According to Widukind of Corvey, Otto was proclaimed Father of the Fatherland and Emperor at the following victory celebration. While the battle was not a crushing defeat for the Hungarians, as Otto was not able to chase the fleeing army into Hungarian lands, the battle ended nearly 100 years of Hungarian invasions into Western Europe. While Otto was fighting the Hungarians with his main army deployed in Southern Germany, the Obotrite Slavs in the north were in a state of insurrection. Count Wichmann the Younger, still Otto's opponent over the King's refusal to grant Wichmann the title of Margrave in 936, marauded through the lands of the Obotrites in the Billung March, causing the followers of Slavic Prince Nako to revolt. The Obotrites invaded Saxony in the fall of 955, killing the men of arms-bearing age and carrying off the women and children into slavery. In the aftermath of the Battle of Lechfeld, Otto rushed to the north and pressed far into their territory. A Slav embassy offered to pay annual tribute in return for