The queen was not yet wholly without resource.  The elector of Saxony, whether invited or not, was not comprised in the union of Frankfort; and, as every sovereign is growing less as his next neighbour is growing greater, he could not heartily wish success to a confederacy which was to aggrandize the other powers of Germany.  The Prussians gave him, likewise, a particular and immediate provocation to oppose them; for, when they departed to the conquest of Bohemia, with all the elation of imaginary success, they passed through his dominions with unlicensed and contemptuous disdain of his authority.  As the approach of prince Charles gave a new prospect of events, he was easily persuaded to enter into an alliance with the queen, whom he furnished with a very large body of troops.

The king of Prussia having left a garrison in Prague, which he commanded to put the burghers to death, if they left their houses in the night, went forward to take the other towns and fortresses, expecting, perhaps, that prince Charles would be interrupted in his march; but the French, though they appeared to follow him, either could not, or would not, overtake him.

In a short time, by marches pressed on with the utmost eagerness, Charles reached Bohemia, leaving the Bavarians to regain the possession of the wasted plains of their country, which their enemies, who still kept the strong places, might again seize at will.  At the approach of the Austrian army, the courage of the king of Prussia seemed to have failed him.  He retired from post to post, and evacuated town after town, and fortress after fortress, without resistance, or appearance of resistance, as if he was resigning them to the rightful owners.

It might have been expected, that he should have made some effort to rescue Prague; but, after a faint attempt to dispute the passage of the Elbe, he ordered his garrison of eleven thousand men to quit the place.  They left behind them their magazines and heavy artillery, among which were seven pieces of remarkable excellence, called “the seven electors.”  But they took with them their field cannon, and a great number of carriages, laden with stores and plunder, which they were forced to leave, in their way, to the Saxons and Austrians that harassed their march.  They, at last, entered Silesia, with the loss of about a third part.

The king of Prussia suffered much in his retreat; for, besides the military stores, which he left every where behind him, even to the clothes of his troops, there was a want of provisions in his army, and, consequently, frequent desertions and many diseases; and a soldier sick or killed was equally lost to a flying army.

At last he reentered his own territories, and, having stationed his troops in places of security, returned, for a time, to Berlin, where he forbade all to speak either ill or well of the campaign.

To what end such a prohibition could conduce, it is difficult to discover:  there is no country in which men can be forbidden to know what they know, and what is universally known may as well be spoken.  It is true, that in popular governments seditious discourses may inflame the vulgar; but in such governments they cannot be restrained, and in absolute monarchies they are of little effect.