 The Polish parliament ("Sejm") did not impose new taxes in order to pay the soldiers of the imperial army fighting under Hans Georg von Arnim-Boitzenburg and due to low morale some of them mutineered or went over to the Swedish side.Several other countries intervened diplomatically and Sigismund III of Poland was eventually forced to enter the truce.In 1635, the truce was extended via the Treaty of Stuhmsdorf.