Leopold was now seventy years of age. On the 5th of February his much-loved wife died at Dessau. Leopold, infirm in health, and broken with grief, entreated the king to allow him to go home. He could not, of course, be immediately spared. On the 15th of March Frederick left Berlin for Silesia. Stopping to examine some of his works at Glogau and Breslau, he reached Neisse on the 23d. On the 29th he dismissed the Old Dessauer, with many expressions of kindness and sympathy, to go home to recover his health. “Old Leopold is hardly at home at Dessau,” writes Carlyle, “when the new Pandour tempests, tides of ravaging war, again come beating against the Giant Mountains, pouring through all passes, huge influx of wild riding hordes, each with some support of Austrian grenadiers, cannoniers, threatening to submerge Silesia. Precursors, Frederick need not doubt, of a strenuous, regular attempt that way. Hungarian majesty’s fixed intention, hope, and determination is to expel him straightway from Silesia.”[81] The latter part of April Prince Charles had gathered a large force of Austrian regulars at Olmütz, with the manifest intention of again invading Silesia. The King of Poland had entered into cordial alliance with Austria, and was sending a large army of Saxon troops to co-operate in the enterprise. Frederick’s indignation was great, and his peril still greater. Encamped in the valley of the Neisse, assailed on every side, and menaced with still more formidable foes, he dispatched orders to the Old Dessauer immediately to establish an army of observation (thirty thousand strong) upon the frontiers of Saxony. He was to be prepared instantly, upon the Saxon troops leaving Saxony, to ravage the country with the most merciless plunderings of war. The Queen of Hungary had purchased the co-operation of the Polish king by offering to surrender to him a generous portion of Silesia after the province should have been reconquered. Indeed, there was a great cause of apprehension that the allied army would make a rush upon Berlin itself. The aspect of his Prussian majesty’s affairs was now gloomy in the extreme. Frederick wrote to his minister Podewils in Berlin, under date of Neisse, March 29, 1745, as follows: “We find ourselves in a great crisis. If we don’t by mediation of England get peace, our enemies from different sides will come plunging in against me. Peace I can not force them to. But if we must have war, we will either beat them, or none of us will ever see Berlin again.” On the 17th of April again he wrote, still from Neisse: “I toil day and night to improve our situation. The soldiers will do their duty. There is none among us who will not rather have his back-bone broken than give up one foot-breadth of ground. They must either grant us a good peace, or we will surpass ourselves by miracles of daring, and force the enemy to accept it from us.”