Shortly after his return from his unsuccessful attempt to invade Scotland, the young prince entered the French army, and served in the Low Countries as a volunteer, under the command of the Duke de Vendôme, who esteemed him very highly. As he had not the means to equip a camp in accordance with his rank, the prince called himself the Chevalier de St. George, that being the order with which his royal father had invested him when he was only four years old. [[A.D. 1709.]] The French met with dreadful defeat at Malplaquet. The Chevalier de St. George fought manfully, and made twelve charges at the head of the French troops, under a continuous fire of six hours from the British. His right arm received a sabre cut, but he did not shrink from his duty; and when the general sent despatches containing an account of the battle, he added: "The Chevalier de St. George behaved himself during the whole action with the utmost valor and energy." Mary Beatrice felt very proud of her son, and returned to St. Germain with her daughter to meet him, after having passed several weeks in complete seclusion at Chaillot convent. [[A.D. 1710.]] The chevalier made a third campaign with the French army, but returned in bad health and spirits, {322}and spent the following winter with his mother and sister, keeping up their separate courts at St. Germain, as well as their poverty would admit. In the spring he made a tour of France; and during his absence Mary Beatrice retired to Chaillot again, where she was really happier than when compelled to observe court ceremonies. While there the royal family of France did not desert her, for they made her frequent visits, which she returned with her daughter, though it cost her a struggle each time she went to court. She always appeared in her widow's weeds; but the princess went in full court costume. [[A.D. 1711.]] Shortly after her son's return, Mary Beatrice received a letter from her old friend, de Lauzun, informing her that peace between France and England would probably soon be established, and, if so, Louis XIV. could no longer acknowledge the title or cause of her son. This was sad news indeed, but the poor queen bore it calmly; and upon the heels of this report came assurance from Marlborough that the recall of the prince seemed certain to take place soon. Thus between hope and despair Mary Beatrice was kept in a constant state of excitement. When we recall the vicissitudes of the queen-mother's life, our admiration of her courage and resignation is changed to surprise that her strength did not succumb, when in her advanced years she was called upon to bear a cruel blow, caused by the death of the darling and pride of her heart, the Princess Louisa.