From the inhabitants of this, as of every important place which afterward submitted, he exacted an oath of allegiance, while he secured its possession by a sufficient garrison. To his ally, Duke William of Weimar, he intrusted the command of an army to be raised in Thuringia. He also left his queen in Erfurt, and promised to increase its privileges. The Swedish army now crossed the Thuringian forest in two columns, by Gotha and Arnstadt, and having delivered, in its march, the county of Henneberg from the Imperialists, formed a junction on the third day near Koenigshofen, on the frontiers of Franconia. Francis, Bishop of Würtzburg, the bitter enemy of the Protestants, and the most zealous member of the League, was the first to feel the indignation of Gustavus Adolphus. A few threats gained for the Swedes possession of his fortress of Koenigshofen, and with it the key of the whole province. At the news of this rapid conquest, dismay seized all the Roman Catholic towns of the circle. The Bishops of Würtzburg and Bamberg trembled in their castles; they already saw their sees tottering, their churches profaned, and their religion degraded. The malice of his enemies had circulated the most frightful representations of the persecuting spirit and the mode of warfare pursued by the Swedish king and his soldiers, which neither the repeated assurances of the king, nor the most splendid examples of humanity and toleration, ever entirely effaced. Many feared to suffer at the hands of another what in similar circumstances they were conscious of inflicting themselves. Many of the richest Roman Catholics hastened to secure by flight their property, their religion, and their persons, from the sanguinary fanaticism of the Swedes. The bishop himself set the example. In the midst of the alarm, which his bigoted zeal had caused, he abandoned his dominions, and fled to Paris, to excite, if possible, the French ministry against the common enemy of religion.