Danes and Saxons, joined by the forces of other German principalities, were already attacking Holstein, whose duke was Charles's cousin; the Saxons, too, were pouring into Livonia. On May 8, 1700, Charles sailed from Stockholm with 8,000 men to the succour of Holstein, which he effected with complete and immediate success by swooping on Copenhagen. On August 6, Denmark concluded a treaty, withdrawing her claims in Holstein and paying the duke an indemnity. Three months later, the Tsar, who was besieging Narva, in Ingria, with 80,000 Muscovites, learnt that Charles had landed, and was advancing with 20,000 Swedes. Another 30,000 were being hurried up by the Tsar when Charles, with only 8,000 men, came in contact with 25,000 Russians at Revel. In two days he had swept them before him, and with his 8,000 men fell upon the Russian force of ten times that number in its entrenchments at Narva. Prodigies of valour were performed, the Muscovites were totally routed. Peter, with 40,000 reinforcements, had no inclination to renew battle, but he very promptly made up his mind that his armies must be taught how to fight. They should learn from the victorious Swedes how to conquer the Swedes.
With the spring, Charles fell upon the Saxon forces in Livonia, before a fresh league between Augustus and Peter had had time to develop advantageously. After one decisive victory, the Duchy of Courland made submission, and he marched into Lithuania. In Poland, neither the war nor the rule of Augustus was popular, and in the divided state of the country Charles advanced triumphantly. A Polish diet was summoned, and Charles awaited events; he was at war, he said, not with Poland, but with Augustus. He had, in fact, resolved to dethrone the King of Poland by the instrumentality of the Poles themselves--a process made the easier by the normal antagonism between the diet and the king, an elective, not a hereditary ruler.
Augustus endeavoured, quite fruitlessly, to negotiate with Charles on his own account, while the diet was much more zealous to curtail his powers than to resist the Swedish monarch, and was determined that, at any price, the Saxon troops should leave Poland. Intrigues were going on on all sides. Presently Charles set his forces in motion. When Augustus learned that there was to be no peace till Poland had a new king, he resolved to fight. Charles's star did not desert him. He won a complete victory. Pressing in pursuit of Augustus, he captured Cracow, but his advance was delayed for some weeks by a broken leg; and in the interval there was a considerable rally to the support of Augustus. But the moment Charles could again move, he routed the enemy at Pultusk. The terror of his invincibility was universal. Success followed upon success. The anti-Saxon party in the diet succeeded in declaring the throne vacant. Charles might certainly have claimed the crown for himself, but chose instead to maintain the title of the Sobieski princes. The kidnapping of James Sobieski, however, caused Charles to insist on the election of Stanislaus Lekzinsky.
II.--From Triumph to Disaster
Charles left Warsaw to complete the subjugation of Poland, leaving the new king in the capital. Stanislaus and his court were put to sudden flight by the appearance of Augustus with 20,000 men. Warsaw fell at once; but when Charles turned on the Saxon army, only the wonderful skill of Schulembourg saved it from destruction. Augustus withdrew to Saxony, and began repairing the fortifications of Dresden.
By this time, wherever the Swedes appeared, they were confident of victory if they were but twenty to a hundred. Charles had made nothing for himself out of his victories, but all his enemies were scattered--except Peter, who had been sedulously training his people in the military arts. On August 21, 1704, Peter captured Narva. Now he made a new alliance with Augustus. Seventy thousand Russians were soon ravaging Polish territory. Within two months, Charles and Stanislaus had cut them up in detail, or driven them over the border. Schulembourg crossed the Oder, but his battalions were shattered at Frawenstad by Reuschild. On September 1, 1706, Charles himself was invading Saxony.
The invading troops were held under an iron discipline; no violence was permitted. In effect, Augustus had lost both his kingdom and his electorate. His prayers for peace were met by the demand for formal and permanent resignation of the Polish crown, repudiation of the treaties with Russia, restoration of the Sobieskies, and the surrender of Patkul, a Livonian "rebel" who was now Tsar Peter's plenipotentiary at Dresden. Augustus accepted, at Altranstad, the terms offered by Charles. Patkul was broken on the wheel; Peter determined on vengeance; again the Russians overran Lithuania, but retired before Stanislaus.
In September 1707, Charles left Saxony at the head of 43,000 men, enriched with the spoils of Poland and Saxony. Another 20,000 met him in Poland; 15,000 more were ready in Finland. He had no doubts of his power to dethrone the Tsar. In January 1708 he was on the march for Grodow. Peter retreated before him, and in June was entrenched beyond the Beresina. Driven thence by a flank movement, the Russians engaged Charles at Hollosin, where he gained one of his most brilliant victories. Retreat and pursuit continued towards Moscow.
Charles now pushed on towards the Ukraine, where he was secretly in treaty with the governor, Mazeppa. But when he reached the Ukraine, Mazeppa joined him not as an ally, but as a fugitive. Meanwhile, Lewenhaupt, marching to effect a junction with him, was intercepted by Peter with thrice his force, and finally cut his way through to Charles with only 5,000 men.
So severe was the winter that both Peter and Charles, contrary to their custom, agreed to a suspension of arms. Isolated as he was, towards the end of May, Charles laid siege to Pultawa, the capture of which would have opened the way to Moscow. Thither Peter marched against him, while Charles himself was unable to move owing to a serious wound in the foot, endured with heroic fortitude. On July 8, the decisive battle was fought. The victory lay with the Russians, and Charles was forced to fly for his life. His best officers were prisoners. A column under Lewenhaupt succeeded in joining the king, now prostrated by his wound and by fever. At the Dnieper, Charles was carried over in a boat; the force, overtaken by the Russians, was compelled to capitulate. Peter treated the captured Swedish generals with distinction. Charles himself escaped to Bender, in Turkey.