Charles soon received powerful reinforcements from Austria, from the pope, and from his Spanish kingdom. With these he marched some forty miles west to Ingolstadt and intrenched himself beneath its massive walls. Here he waited for further reinforcements, and then commencing the offensive, marched up the Danube, taking possession of the cities on either bank. And now the marshaled forces of the emperor began to crowd the Protestants on all sides. The army became bewildered, and instead of keeping together, separated to repel the attack at different points. This caused the ruin of the Protestant army. The dissevered fragments were speedily dispersed. The emperor triumphantly entered the Protestant cities of Ulm and Augsburg, Strasbourg and Frankfort, compelled them to accept humiliating conditions, to surrender their artillery and military stores, and to pay enormous fines. The Archbishop of Cologne was deposed from his dignities. The emperor had thrown his foes upon the ground and bound them. All the Protestant princes but two were vanquished, the Elector of Saxony and the Landgrave of Hesse. It was evident that they must soon yield to the overwhelming force of the emperor. It was a day of disaster, in which no gleam of light seemed to dawn upon the Protestant cause. But in that gloomy hour we see again the illustration of that sentiment, that "the race is not always to the swift nor the battle to the strong." Unthinking infidelity says sarcastically, "Providence always helps the heavy battalions." But Providence often brings to the discomfited, in their despair, reinforcements all unlooked for. There were in the army of Ferdinand, gathered from the Austrian territories by the force of military conscription, many troops more or less influenced by the reformed religion. They were dissatisfied with this warfare against their brothers, and their dissatisfaction increased to murmurs and then to revolt. Thus encouraged, the Protestant nobles in Bohemia rose against Ferdinand their king, and the victorious Ferdinand suddenly found his strong battalions melting away, and his banners on the retreat.