It will be remembered that Prince Charles was at the head of a strong Austrian army, on the western banks of the Rhine. It numbered over fifty thousand combatants. The King of France had pledged himself to press them closely, so that they could not recross the Rhine and rush into Bohemia to thwart the operations of Frederick; but, unfortunately, Louis XV. was seized with a malignant fever, which brought him near to the grave. Taking advantage of this, Prince Charles, on the night of the 23d of August, crossed the Rhine with his whole army. It was bright moonlight, so that every movement was as visible as if it had been made by day. But the French officers, glad thus to be rid of the Austrian army, preferring much that Frederick should encounter it in Bohemia than that they should struggle against it on the Rhine, went quietly to their beds, even forbidding the more zealous subalterns from harassing Prince Charles in his passage of the river. It was then the great object of the French to take Freyburg. The withdrawal of Prince Charles, with his fifty thousand men, was a great relief to them. While Frederick was involved in all these difficulties, he was cheered by the hope that the French would soon come to his rescue. Unutterable was his chagrin when he learned, early in October, that the French had done exactly as he would have done in their circumstances. Appalling, indeed, were the tidings soon brought to him, that Prince Charles, with his army, had marched unmolested into Bohemia; that he had already effected a junction with General Bathyani and his countless swarm of Pandours; and, moreover, that a Saxon army, twenty thousand strong, in alliance with the Queen of Hungary, was on the way to join his already overwhelming foes. It was reported, at the same time, that Prince Charles was advancing upon Budweis, and that his advance-guard had been seen, but a few miles off, on the western side of the Moldau. The exigency demanded the most decisive action. Frederick promptly gathered his army, and dashed across the Moldau, resolved, with the energies of despair, to smite down the troops of Prince Charles; but no foe could be found. For four days he sought for them in vain. He then learned that the Austrian army had crossed the Moldau several miles north of him, thus cutting off his communications with Prague. Though Prince Charles was nominally commander-in-chief of the Austrian forces, Marshal Traun, as we have mentioned, was its military head. He was, at that time, far Frederick’s superior in the art of war. Frederick had sufficient intelligence and candor to recognize that superiority. When he heard of this adroit movement of his foes, he exclaimed, “Old Traun understands his trade.”