Saxony was distant from Augsburg and its environs, and considerable time would have elapsed waiting for his arrival. Ulm was chosen as the place to unite the anti-Hungarian forces. The battle took place six weeks after the first report of an invasion, and historian Hans Delbrück asserts that they could not have possibly made the march in time. The King ordered his troops to concentrate on the Danube, in the vicinity of Neuburg and Ingolstadt. He did this in order to march on the Hungarian line of communications and catch them in their rear while they were raiding northeast of Augsburg. It was also a central point of concentration for all the contingents that were assembling. Strategically, therefore, this was the best location for Otto I to concentrate his forces before making the final descent upon the Hungarians. There were other troops that had an influence on the course of the battle. On previous occasions, in 932 and 954 for example, there had been Hungarian incursions that had invaded the German lands to the south of the Danube, and then retreated back to their native country via Lotharingia, to the West Frankish Kingdom and finally, through Italy. That is to say, a wide sweeping U-turn that initially started westward, then progressed to the south, and then finally to the east back to their homeland; and thus escaping retribution in German territory. The King was aware of the escape of these Hungarians on the above-mentioned occasions, and was determined to trap them. He therefore ordered his brother, Archbishop Bruno, to keep the Lotharingian forces in Lotharingia. With a powerful force of knights pressing them from the west, and an equally strong force of knights chasing them from the east, the Hungarians would be unable to escape. Located south of Augsburg, the Lechfeld is the flood plain that lies along the river Lech. The battle appears as the second Battle of Augsburg in Hungarian historiography. The first Battle of Lechfeld happened in the same area forty-five years earlier. Prelude Gerhard writes that the Hungarian forces advanced across the Lech to the river Iller and ravaged the lands in between. They then withdrew from the Iller and placed Augsburg, a border city of Swabia, under siege. Augsburg had been heavily damaged during a rebellion against Otto I in 954. The city was defended by Bishop Ulrich. He ordered his contingent of soldiers to