Peace of Prague
Melander, the Swedish commander at Oldendorf, intrigued with the Holy Roman Emperor in 1635 to merge Hesse-Kassel's forces into the Imperial army and have Hesse-Kassel sign the Peace of Prague. These plans failed, and personal quarrels led him to leave service and to re-enter it as the Imperial commander of Westphalia in 1645. The Peace of Prague reconciled many Protestant states with the Holy Roman Emperor, most notably the Electorate of Saxony. As a consequence, Sweden's and Hesse-Kassel's forces stood alone against a growing anti-Swedish, pro-Habsburg coalition in 1635 - a disequilibrium eventually stirring France's intervention in the Thirty Years' War.