He spread terror through all Upper Poland, Silesia, and Saxony. King Augustus's whole family, his mother, his wife, his son, and the principal nobility of the country, were retired into the heart of the empire. Augustus now sued for peace, choosing rather to trust himself to the mercy of his conqueror, than in the arms of his protector. He entered into a treaty which deprived him of the crown of Poland, and covered him at the same time with ignominy. This was a private treaty, and was to be concealed from the czar's generals, with whom he had taken refuge in Poland, while Charles XII. was giving laws in Leipsic, and acting as absolute master throughout his electorate.
His plenipotentiaries had already signed the fatal treaty (Sept. 14.), by which he not only divested himself of the crown of Poland, but promised never more to assume the title of king; at the same time he recognized Stanislaus, renounced his alliance with the czar his benefactor; and, to complete his humiliation, engaged to deliver up to Charles XII. John Reinold Patkul, the czar's ambassador and general in the Russian service, who was then actually fighting in his cause. He had some time before ordered Patkul to be arrested upon false suspicions, contrary to the law of nations; and now, in direct violation of these laws, he delivered him up to the enemy. It had been better for him to have died sword-in-hand, than to have concluded such a treaty; a treaty, which not only robbed him of his crown, and of his reputation, but likewise endangered his liberty, because he was at that time in the power of prince Menzikoff in Posnania, and the few Saxons that he had with him, were paid by the Russians.
Prince Menzikoff was opposed in that district by a Swedish army, reinforced with a strong party of Poles, in the interest of the new king Stanislaus, under the command of general Meyerfeld; and not knowing that Augustus had engaged in a treaty with the enemies of Russia, had proposed to attack them, and Augustus did not dare to refuse. The battle was fought near Calish (Oct. 19.), in the palatinate belonging to Stanislaus; this was the first pitched battle the Russians had gained against the Swedes. Prince Menzikoff had all the glory of the action, four thousand of the enemy were left dead on the field, and two thousand five hundred and ninety-eight were made prisoners.