After dinner the king left the city amid the enthusiastic admiration of the people. His pictures were scattered throughout the country, poems were written wherein he was likened to Moses, to Joshua, to Gideon, to David, and even to Judas Maccabeus, the deliverer of his nation, showing, at least, that the people knew well their Bible history. The signal for Gustavus to leave that part of the country was the sudden advance of Tilly against Gustavus Horn, one of the Swedish generals. Tilly compelled General Horn to evacuate the bishopric of Bamberg. Gustavus pursued the Imperialists into Bavaria, forced the passage of the Danube at Donauwörth, where Tilly's forces retreated under a galling artillery fire from the Swedish batteries. The conquest of Donauwörth made the king controller of the Danube, and only the small River Lech kept him from the States of Maximilian, who seems to have been about all that was left of the Catholic League. The Lech is usually a small stream, but the melting snow in the Tyrol mountains had made it a raging torrent. Tilly's forces were in a strongly fortified camp protected by this roaring current, so that the position was impregnable. The armies were within speaking distance of each other. As the king rode along the bank he called to the sentinel on the opposite side, "Good morning, sir. Where is old Tilly?" "Praise God, he is in his quarters at Main," said the man, then added, "Where is the king, comrade?" "He is in his quarters, too," said Gustavus. "What! you don't mean to say he has got any quarters, do you?" "Oh, yes. Come over here yourself and you shall have excellent quarters." It was just that spirit of humor which endeared Gustavus to his polyglot army. Gustavus rode up and down the bank reconnoitering. He soon observed that the side on which his army was located was considerably higher than the other side, so he arranged three batteries with seventy-two field pieces, keeping up a ruinous cross fire on the Bavarians. While this was going on the king's army built a bridge across the Lech. They kept the Bavarians very busy on account of the destructive fire of the artillery, and they made a great smoke with wet straw and wet wood so that their work was concealed for some time from General Tilly. Gustavus fired over sixty guns with his own hands and seemed to be everywhere among his men cheering and directing them. General Tilly, though a much older man, would not leave the opposite bank of the river; no danger from that cross fire could drive him from his post, and there he was mortally wounded and carried from the field. The Bavarians gave way and the dying Tilly advised Maximilian to retreat. So before a single one of Gustavus' army had crossed the river Maximilian broke camp and retreated to Neuburg and to Ingolstadt.