After the election of Henry the Fowler as the new king of East Francia, a Hungarian army enters in Germany, and defeats Henry's forces in the Battle of Püchen, then heads towards West. The Hungarian army enters Lotharingia and France. King Charles the Simple cannot gather enough forces to face them in a battle, retreats, and lets them to plunder his realm. Early 920, the same Hungarian army enter from West in Burgundy, then in Lombardy, and defeats the forces of Rudolf II of Burgundy, who attacked Berengar I of Italy, the ally of the Principality of Hungary. After that, the Magyars plunder the surrounding of those Italian cities, which they think that supported Rudolf: Bergamo, Piacenza and Nogara.