In 1630, Gustavus Adolphus of Sweden landed in Germany and relieved the port of Stralsund that was the last stronghold on the continent held by German forces belligerent to the Emperor. Gustav then marched south winning notable victories at Breitenfeld and Lutzen, attracting greater support for the Protestant cause the further he went. The situation for the Catholics improved with Gustav's death at Lutzen in 1632 and a shocking victory for Imperial forces under Cardinal-Infante Ferdinand and Ferdinand II of Hungary at Nordlingen in 1634. From a position of strength, the Emperor approached the war-weary German states with a peace in 1635; many accepted, including the two most powerful, Brandenburg and Saxony.