sentences:  Hostilities had already begun with the occupation of Dünaburg in Polish Livonia by the Swedes on 1 July 1655.Then on 21 July 1655 Swedish army under Arvid Wittenberg crossed into Poland and proceeded towards the encampment of the Greater Poland Levy of the Nobility (pospolite ruszenie) encamped among the banks of the Noteć river, with some regular infantry for support.On 25 July the Polish noble levy army capitulated, and the voivodeships of Poznań and Kalisz placed themselves under the protection of the Swedish King.