Kammala jumla mai zuwa: Yaƙin Shekaru talatin (1618-48) ya faru ne a lokacin mulkin Elector John George (1611-56). A cikin wannan gwagwarmaya, Elector ya kasance a farkon tsaka tsaki, kuma na dogon lokaci ba zai saurari maganganun Sarki Gustavus Adolphus na Sweden ba. Ba har sai Janar Janar Johann Tserclaes na Tilly ya ci gaba zuwa Saxony ba sai mai zaben ya shiga sojojin Daular Sweden. Duk da haka, bayan 1634
Yaƙin Nördlingen, Mai Zaben ya kammala Zaman Lafiya na Prague tare da Sarkin sarakuna Ferdinand II a 1635. Ta wannan yarjejeniya, Saxony ta karɓi Margravates na Upper da Lower Lusatia a matsayin Bohemian fiefdom, kuma yanayin ƙasashen Cocin da aka lalata ba a canza ba. Su kuma 'yan Sweden, sun yi ramako da shekara goma na ganima.