Gustav II Adolph, also known as Gustavus Adolphus, was the King of Sweden from 1611 until his death in 1632. He is often credited with transforming Sweden into a major European power during the Thirty Years' War. His military innovations and strategies, including the use of mobile artillery, significantly influenced modern warfare. Gustav II Adolph was also a patron of the arts and education, promoting the establishment of universities and cultural institutions. His reign is marked by efforts to strengthen the Swedish state and expand its territories, particularly in Germany and the Baltic Sea region.