Henry next proceeded southward against the Daleminzi, against whom he had won his first laurels. They were familiar with the strokes of Henry’s sword and did not dare to meet him in open battle. They shut themselves up within their stronghold, Gana, but this also was taken on the twentieth day. Deadly hatred had long reigned between Wends and Saxons, which here demanded sanguinary sacrifices. The city was plundered, the grown men were killed, the children sold as slaves. Severe custom would have it thus, and the German has taken his word “slave” from the Slavs.
Henry also proceeded against the Czechs in Bohemia, whose lands adjoined those of the Daleminzi, with whom they were tribally related. Only since one generation had the tribe been ruled by one family, that of the Premyslids; Christianity had made some headway under this single rulership, although it found difficult entry among the stiff-necked tribe.
A more powerful resistance was to be expected from this numerous tribe, united under one rule, than from the other Slavic stems. Therefore the king called on Duke Arnulf for aid, and a Bavarian army advanced through the Bohemian forest, at the same time with the king, into the land of the Czechs. It was the first time that the Bavarians had given the Saxons military attendance. They penetrated clear into the centre of the country where Prague is located on the bank of the swift Moldau. Here the young Bohemian duke Wenceslaus, who had already accepted Christianity through the influence of his pious grandmother, Ludmilla, surrendered himself and his land to the king (929). He received it again in fief and from now on paid the Saxons a tribute, which perhaps already at that time, as later, consisted of 500 silver marks and 120 oxen. From that time on the kings of Germany demanded feudal service and obedience from the Bohemian princes, until finally the land itself at a much later period fell to the German princes.
[929 A.D.]
While the king himself was subjugating these Slavic stems, his counts had fought with success against the Wends living in the north. The Redarii living in the lake districts north of the Havel as far as the Peene were first conquered, then the Abodriti and the Wilzi who dwelt north and west of them clear to the shores of the Baltic. Within a short time the greatest part of the land between the Elbe and Oder was won for Saxon rule, but the hard will of the Wend tribes living in these districts was not broken and the blood of their relatives which had been shed cried for vengeance. First the Redarii arose in rage against German rule; they gathered together and fell upon Walsleben. The strongly fortified town was at that time well populated, but it could not defend itself against the superior numbers of the enemy. It was taken by assault and all its inhabitants were killed; not one saw the light of the coming day. This was a signal for a general uprising. The Wend tribes of the north arose to a man, to throw off the hated yoke of the Saxons.
Henry prepared quickly for battle and ordered Count Bernhard, to whom he had intrusted the guardianship of the Redarii, and Count Thietmar, to begin the war at once, by the siege of Lenzen, a stronghold which was in the hands of the Wends. The Saxon militia was assembled as well as possible in the general haste, and together with the war forces from the marks, was placed under Bernhard’s command. When Lenzen had been besieged for five days, it was announced by spies that an army of Wends was in the vicinity and that it would attack the Saxon camp at the fall of night. Bernhard at once assembled his warriors in his tent and ordered them to remain under arms the whole night. The crowd separated and each gave himself up to joy or sorrow, hope or fear, according to whether he desired the battle or not. Night came on; it was darker than usual, the sky covered with heavy clouds, and the rain fell in torrents. In such weather the courage of the Wends sank and they gave up the attack. When, however, the morning dawned, although the Saxons had been under arms all night, Bernhard decided to venture an attack himself, and gave the signal for battle. Thereupon all took an oath forgiving themselves their failings and each other their ancient feuds—such was the custom before a battle—and with a solemn oath swore to support and aid each other in the strife as they would their leaders. Then when the sun came up—the sky shone in clear blue after the storm of the night—they marched out of camp.