The queen had effectually checked his progress, new levies were crowding to her aid, and it was in vain for Frederic, with his diminished and exhausted regiments, to undertake an assault upon the ramparts of Vienna. Again he proposed terms of peace. He demanded all of upper as well as lower Silesia, and the county of Glatz, containing nearly seven hundred square miles, and a population of a little over sixty thousand. Maria Theresa, crowded by her other enemies, was exceedingly anxious to detach a foe so powerful and active, and she accordingly assented to the hard terms. This new treaty was signed at Breslau, on the 11th of June, and was soon ratified by both sovereigns. The Elector of Saxony was also included in this treaty and retired from the contest.
The withdrawal of these forces seemed to turn the tide of battle in favor of the Austrians. The troops from Hungary fought with the most romantic devotion. A band of Croats in the night swam across a river, with their sabers in their mouths, and climbing on each other’s shoulders, scaled the walls of the fortress of Piseck, and made the garrison prisoners of war. The Austrians, dispersing the allied French and Bavarians in many successful skirmishes, advanced to the walls of Prague. With seventy thousand men, the Duke of Lorraine commenced the siege of this capital, so renowned in the melancholy annals of war. The sympathies of Europe began to turn in favor of Maria Theresa. It became a general impression, that the preservation of the Austrian monarchy was essential to hold France in check, which colossal power seemed to threaten the liberties of Europe. The cabinet of England was especially animated by this sentiment, and a change in the ministry being effected, the court of St. James sent assurances to Vienna of their readiness to support the queen with the whole power of the British empire. Large supplies of men and money were immediately voted. Sixteen thousand men were landed in Flanders to cooperate with the Austrian troops. Holland, instigated by the example of England, granted Maria Theresa a subsidy of eight hundred and forty thousand florins. The new Queen of Russia, also, Elizabeth, daughter of Peter the Great, adopted measures highly favorable to Austria.