As soon as this treaty was signed, he hurried to the theatre of war. He had an interview with king Augustus, at Birzen, (Feb. 27.) on the frontiers of Courland and Lithuania. His object was, to confirm that prince in his resolution of maintaining the war against Charles XII. and at the same time to engage the Polish Diet to enter into the quarrel. It is well known, that a king of Poland is no more than the head person in a republic. The czar had the advantage of being always obeyed; but the kings of Poland, and England, at present the king of Sweden, are all obliged to treat with their subjects.[63] Patkul and a few Poles in the interest of their monarch, assisted at these conferences. Peter promised to aid them with subsidies, and an army of twenty-five thousand men. Livonia was to be restored to Poland, in case the diet would concur with their king, and assist in recovering this province: the diet hearkened more to their fears, than to the czar's proposals. The Poles were apprehensive of having their liberties restrained by the Saxons and Russians, and were still more afraid of Charles XII. It was therefore agreed by the majority, not to serve their king, and not to fight. The partisans of Augustus grew enraged against the contrary faction, and a civil war was lighted up in the kingdom; because their monarch had an intention to restore to it a considerable province. Feb.] Peter then had only an impotent ally in king Augustus, and feeble succours in the Saxon troops; and the terror which Charles XII. inspired on every side, reduced Peter to the necessity of depending entirely upon his own strength. March 1.] After travelling with the greatest expedition from Moscow to Courland, to confer with Augustus: he posted back from Courland to Moscow, to forward the accomplishment of his promises. He actually dispatched Prince Repnin, with four thousand men, to Riga, on the banks of the Duna, where the Saxon troops were intrenched. July.] The general consternation was now increased; for Charles, passing the Duna in spite of all the Saxons, who were advantageously posted on the opposite side, gained a complete victory over them; and then, without waiting a moment, he made himself master of Courland, advanced into Lithuania, and by his presence encouraged the Polish faction that opposed Augustus. Peter, notwithstanding all this, still pursued his designs. General Patkul, who had been the soul of the conference at Birzen, and who had engaged in his service, procured him some German officers, disciplined his troops, and supplied the place of general Le Fort: the czar ordered relays of horses to be provided for all the officers, and even for the German, Livonian, and Polish soldiers, who came to serve in his armies. He likewise inspected in person into every particular relating to their arms, their clothing, and subsistence.