 The Lenzen stronghold on eastern bank of the Elbe was a major operating base for the Slavs, facilitating their attacks to Saxony across the Elbe.Henry ordered the assembly of an expeditionary army of Saxons under the command of the Saxon magnate, Count Bernhard, who was also responsible for maintaining relations with the Redarii.Count Thietmar served as Bernhard's "collega" and commander of cavalry.