Second Northern War the Little Northern War, which however might also refer to the 1741-43 war. In Poland, the term "The Deluge" is also ambiguous, as it is sometimes used for a broader series of wars against Sweden, Brandenburg, Russia, Transylvania and the Cossacks. In 1648, the Peace of Westphalia had ended the Thirty Years' War, during which the Swedish Empire emerged as a major European power. In the Torstenson War, a theater of the Thirty Years' War, Sweden had defeated the former Baltic great power Denmark. Sweden had been at peace with Russia since the Treaty of Stolbovo had ended the Ingrian
War of the Fifth Coalition not been able to save Prussia. The Russian and French armies met in February 1807 at the savage and indecisive Battle of Eylau, which left behind between 30,000–50,000 casualties. Napoleon regrouped his forces after the battle and continued to pursue the Russians in upcoming months. The action in Poland finally culminated on 14 June 1807, when the French mauled their Russian opponents at the Battle of Friedland. The resulting Treaty of Tilsit in July ended two years of bloodshed and left France as the dominant power on the European continent. It also severely weakened Prussia and formed a Franco-Russian axis