We have already seen that the Duc de Mayenne had protested to Rucellaï his attachment to the cause and person of Marie; yet he did not hesitate to accept the command of the army which was organized against her, and to march upon the province of Angoumois at the head of twelve thousand men. The position of the Queen--mother was critical. She issued continual commissions for the levy of troops, but she was unable to furnish the necessary funds for their support, and in this difficulty she resolved to appeal to the Protestants who were at that time holding their General Assembly at La Rochelle. She was aware that they were inimical to De Luynes, and she trusted that they might consequently be induced to join her own faction. Once more, however, she was doomed to disappointment. They were dissuaded from such a project by Du Plessis;[29] and M. d'Epernon, after the most strenuous efforts, could not succeed in raising more than six thousand foot and one thousand horse with which to make head against the royal army. Moreover, Schomberg, Lieutenant of the King in Limousin under M. d'Epernon, who was the governor of the province, declared against him, and took the town of Uzerche which was feebly garrisoned,[30] while the Duke was engaged in checking the advance of Mayenne; nor was it long ere intelligence arrived at Angoulême that Boulogne-sur-Mer had opened its gates to the royal forces, and thus revolted against the authority of Epernon, who was also governor of Picardy.[31] These disasters were a source of great anxiety to Marie de Medicis, who began to apprehend that should the Duke be in like manner despoiled of his other fortified cities he would no longer be in a position to afford her any protection; but fortunately De Luynes had also taken alarm. The citizens made no attempt to conceal their dissatisfaction, the populace openly murmured in the streets, and the favourite had not yet had time to forget the popular vengeance which had been wreaked upon the wretched Concini; no wonder therefore that he trembled for himself. Richelieu had been, as already stated, recalled from his exile at Avignon, and the moment was now arrived in which his services were essential to De Luynes, by whom he was forthwith despatched to Angoulême, on the understanding that the King had perfect confidence in his fidelity, and placed implicit reliance on his desire to prove his affection to his person. The astute prelate required no further explanation as to what was required of him; he was aware that his compulsory absence had caused his services to be more than ever coveted by the Queen-mother, and he lost no time in setting forth upon his treacherous errand, furnished with a letter to Marie, below which Louis wrote with his own hand: "I beg you to believe that this document explains my will, and that you cannot afford me greater pleasure than by conforming to it."