In 1612, when Charles IX of Sweden's son Gustavus Adolphus of Sweden (Gustav II Adolf) had just been appointed king, the two units had about 200 cavalry riders each and were well trained and organized. These cavalry units would become the backbone of the king's successful military tactics, inspired by the new Polish hussars of the effective light-hussar units during the Thirty Years' War and the Polish-Swedish War. In 1626, he reorganized the Swedish Army completely into independent fighting units called squadrons composed of four mounted-rider (Hussar) companies, with 100 riders each, fighting next to infantry units dragoon. The newly named "regiment" units were 'The Riders of Uppland', which recruited from Uppland, Västmanland, and Värmland, and 'The Riders of Södermanland' which recruited from Södermanland and Närke. They had two squadrons each. In the Battle of Lützen (1632), the king himself commanded two of these squadrons, one from each regiment, on the left wing against the Roman Catholic general Wallenstein, where, due to heavy smoke, they became separated from the rest of the army and suffered heavy losses, including the king's life. Sweden still won that battle, and today the name of this battle is included in the regimental flag. These tactics, with cavalry playing the central role of fast flanking manoeuvres on the battlefield, required much more practice than previous styles and Gustavus Adolphus has been called the "father of modern warfare", or the first great modern general.