The rapid successes of the King of Sweden in Germany, and the extraordinary strength of the States-General in the United Provinces, had greatly alarmed both the Emperor and the King of Spain; who were consequently well pleased to encourage any internal agitation which might so fully tend to occupy the attention of Louis as to prevent him from rendering effective aid either to Gustavus, the United Provinces, or the Protestant Princes of Germany, nearly the whole of whom were in arms against the Emperor; and thus the request of Marie was eagerly welcomed alike by Ferdinand, Philip, and Isabella, who pledged themselves to assist her to the full extent of their power. The Court of Brussels especially made her the most unqualified promises; and the Archduchess, while assuring her that on her arrival she should be received with all the honour due to her distinguished rank, was profuse in her expressions of sympathy. Thus, as we have shown, when Richelieu demanded and received the promise of Marie de Medicis that she would not seek to leave Compiègne, she was only awaiting a favourable opportunity to effect her escape, and this was afforded by the evacuation of the garrison. Fearful, however, that this new order might only be a snare laid for her by the Cardinal, and aware that although the troops had left the town they were still quartered in the environs, she affected to discredit the assurance of the Maréchal that thenceforth he exercised no control over her movements. "I am not to be thus duped, Monsieur," was her cold reply. "Your men are not far off; and I believe myself to be so thoroughly a prisoner that henceforward I shall never leave the castle; even my walks shall be restricted to the terrace." When this determination on the part of his mother was communicated to the King, he hastened to inform her that the troops should be withdrawn to a distance from Compiègne; and to entreat that, in consideration for her health, she would occasionally take the exercise by which alone it could be preserved. To this request she replied that she should obey his pleasure in all things; and having thus, as she believed, removed all suspicion of her purpose, she only awaited the conclusion of the necessary preparations to carry it into execution.