Siege of Danzig (1655–60)

The Siege of Danzig took place between 1655 and 1660 when a Swedish force tried to capture this important Baltic Sea port city from the Polish-Lithuanian Commonwealth during the Second Northern War. After 5 years of fighting around Danzig (Gdańsk), the Swedish force which has made little ground surrendered.

Chronology

 * 1655
 * Swedish naval forces blocked Danzig's harbor - trade was suspended.
 * Swedish land forces capture the fortress Danziger Haupt (Głowa Gdańska, Danzig Head) - very important water gate on Vistula River
 * 1656, July - Dutch naval forces comes to Gdańsk Bay and unblock Danzig's harbor.
 * 1656, September - Treaty of Elbing: siege lifted due to Dutch intervention
 * 1659, 26 October - Poles defeated the Swedes in a skirmish near Danziger Haupt.
 * 1659, 22 December - Swedish garrison of the fortress Danziger Haupt capitulated.
 * 1660, May - Treaty of Oliva was signed. End of war.

Danzig all of that time was unconquered and remain loyal to Polish-Lithuanian Commonwealth.