The Siege of Toruń was one of the battles during the Swedish invasion of Polish-Lithuanian Commonwealth (Second Northern War / Deluge). It started on 2 July 1658 and ended on 30 December 1658. Swedish garrison capitulated and Toruń returned to Polish hands. Polish plans for 1658 were concentrated on gradual recapture of the province of Royal Prussia. First objective was Toruń, a strategically located Vistula river port, with modern fortifications. Due to Dano-Swedish War, most Austrians, under Field Marshall Raimondo Montecuccoli, left Poland and marched to Jutland.