The deputies of the three crowns, and of Bavaria, met at Ulm, to adjust the conditions. But it was soon evident, from the instructions of the Austrian ambassadors that it was not the intention of the Emperor to second the conclusion of a truce, but if possible to prevent it. It was obviously necessary to make the terms acceptable to the Swedes, who had the advantage, and had more to hope than to fear from the continuance of the war. They were the conquerors; and yet the Emperor presumed to dictate to them. In the first transports of their indignation, the Swedish ambassadors were on the point of leaving the congress, and the French were obliged to have recourse to threats in order to detain them. The good intentions of the Elector of Bavaria, to include the Emperor in the benefit of the truce, having been thus rendered unavailing, he felt himself justified in providing for his own safety. However hard were the conditions on which the truce was to be purchased, he did not hesitate to accept it on any terms. He agreed to the Swedes extending their quarters in Suabia and Franconia, and to his own being restricted to Bavaria and the Palatinate. The conquests which he had made in Suabia were ceded to the allies, who, on their part, restored to him what they had taken from Bavaria. Cologne and Hesse Cassel were also included in the truce. After the conclusion of this treaty, upon the 14th March, 1647, the French and Swedes left Bavaria, and in order not to interfere with each other, took up different quarters; the former in Wuertemberg, the latter in Upper Suabia, in the neighbourhood of the Lake of Constance. On the extreme north of this lake, and on the most southern frontier of Suabia, the Austrian town of Bregentz, by its steep and narrow passes, seemed to defy attack; and in this persuasion, the whole peasantry of the surrounding villages had with their property taken refuge in this natural fortress. The rich booty, which the store of provisions it contained, gave reason to expect, and the advantage of possessing a pass into the Tyrol, Switzerland and Italy, induced the Swedish general to venture an attack upon this supposed impregnable post and town, in which he succeeded. Meantime, Turenne, according to agreement, marched into Wuertemberg, where he forced the Landgrave of Darmstadt and the Elector of Mentz to imitate the example of Bavaria, and to embrace the neutrality.