 Charles X Gustav created Wrangel freiherr of Ludenhof and Lord High Admiral, a special favour since Charles X Gustav left most of Sweden's highest offices vacant.When the Second Northern War broke out in 1655, Wrangel commanded a fleet, but in 1656, he was serving on land again and commanding, along with "Great Elector" Frederick William I of Brandenburg in the three-day Battle of Warsaw (1656).In 1657, he invaded Jutland, and in 1658, he passed over the ice into the islands and took Kronborg.