Charles XII Halts at Moscow: Sweden's Decline Begins

Charles XII of Sweden halted his march on Moscow outside Smolensk in September 1708, a decision that marked the turning point of the Great Northern War and sealed the fate of the Swedish Empire as a European great power. Charles had invaded Russia with an army of roughly 40,000 men, one of the finest fighting forces on the continent, expecting to force Peter the Great into a single decisive battle that would end the war. Peter refused to oblige. Russian forces executed a methodical scorched-earth retreat, burning villages, destroying harvested grain, and poisoning wells to deny the Swedes any possibility of resupply. The tactic was devastatingly effective. By the time Charles reached Smolensk, his army was starving, his supply lines stretched beyond recovery, and the first signs of what would become one of the coldest winters in European recorded history were beginning to appear. Rather than push forward into increasingly hostile territory, Charles turned south into Ukraine, hoping to link up with the Cossack hetman Ivan Mazepa, who had promised substantial reinforcements and food supplies. Mazepa delivered only a fraction of the troops he had pledged, and Russian cavalry destroyed the Swedish supply column at the Battle of Lesnaya before it could reach Charles. The weakened Swedish force spent a brutal winter on the Ukrainian steppe. Nine months after the halt at Smolensk, Peter's army destroyed what remained of Charles's army at the Battle of Poltava in June 1709. Sweden lost roughly 19,000 men killed or captured in a single afternoon. The empire never recovered. Russia emerged as the dominant military power in the Baltic and northeastern Europe for the next two centuries.