The affairs on the continent of Europe were now more than ever embroiled. The king of Prussia had demanded of the court of Vienna part of Silesia, by virtue of old treaties of co-fraternity, which were either obsolete or annulled; and promised to assist the queen with all his forces in case she should comply with his demand; but this being rejected with disdain, he entered Silesia at the head of an army, and prosecuted his conquests with great rapidity. In the meantime the queen of Hungary was crowned at Presburgh, after having signed a capitulation, by which the liberties of that kingdom were confirmed; and the grand duke her consort was, at her request, associated with her for ten years in the government. At the same time the states of Hungary refused to receive a memorial from the elector of Bavaria.
During these transactions, his Prussian majesty made his public entrance into Breslau, and confirmed all the privileges of the inhabitants. One of his generals surprised the town and fortress of Jablunka, on the confines of Hungary; prince Leopold of Anhalt-Dessau, who commanded another army which formed the blockade of Great Glogau, on the Oder, took the place by scalade, made the generals Wallis and Reyski prisoners, with a thousand men that were in garrison; here likewise the victor found the military chest, fifty pieces of brass cannon, and a great quantity of ammunition.
The queen of Hungary had solicited the maritime powers for assistance, but found them fearful and backward. Being obliged, therefore, to exert herself with the more vigour, she ordered count Neuperg to assemble a body of forces, and endeavour to stop the progress of the Prussians in Silesia. The two armies encountered each other in the neighbourhood of Neiss, at a village called Molwitz; and, after an obstinate dispute, the Austrians were obliged to retire with the loss of four thousand men killed, wounded, or taken. The advantage was dearly purchased by the king of Prussia. His kinsman Frederick, margrave of Brandenburgh, and lieutenant-general Schuylemberg, were killed in the engagement, together with a great number of general officers, and about two thousand soldiers. After this action, Brieg was surrendered to the Prussian, and he forced the important pass of Fryewalde, which was defended by four thousand Austrian hussars. The English and Dutch ministers, who accompanied him in his progress, spared no pains to effect an accommodation; but the two sovereigns were too much irritated against each other to acquiesce in any terms that could be proposed. The queen of Hungary was incensed to find herself attacked, in the day of her distress, by a prince to whom she had given no sort of provocation; and his Prussian majesty charged the court of Vienna with a design either to assassinate or carry him off by treachery; a design which was disowned with expressions of indignation and disdain. Count Neuperg being obliged to abandon Silesia, in order to oppose the Bavarian arms in Bohemia, the king of Prussia sent thither a detachment to join the elector, under the command of count Deslau, who, in his route, reduced Glatz and Neiss, almost without opposition; then his master received the homage of the Silesian states at Breslau, and returned to Berlin. In December, the Prussian army was distributed in winter-quarters in Moravia, after having taken Olmutz, the capital of that province; and in March his Prussian majesty formed a camp of observation in the neighbourhood of Magdeburgh.