Task: Text Categorization
Input (English): After signing the Treaty of Stolbovo with Russia, he participated in a war that would be ended by the Truce of Altmark, a conflict in which this man, a brother-in-law of Transylvanian prince Gabor Bethlen, won the Battle of Gniew (pronounced "Niev"), besieged Orneta, was wounded at the Battle of Dirschau, and made an amphibious landing at Pillau. He annexed Stralsund after saving it from Imperial occupation, and at the Battle of Lech his forces killed the Count of Tilly after having earlier defeating him at Breitenfeld, but then this man died at the Battle of Lutzen. For ten points, name this employer of Axel Oxenstierna, a Swedish king who intervened in the Thirty Years's War.
Output (English): History