 ), between the Swedish Empire and the Holy Roman Empire.The Swedes had 16,000 soldiers and were led by Gustavus Adolphus, while the Imperialists had 23,000 soldiers and were led by Field-Marshal Count Tilly.Tilly's troops attacked Gustavus' entrenchments in front of Werben (Elbe), but Swedish batteries and the cavalry under Wolf Heinrich von Baudissin forced them to retreat.