Polish–Swedish War (1621–1625)
phase of the Polish-Swedish war
The Polish–Swedish War (1621 to 1625) was one in a series of conflicts between the Polish–Lithuanian Commonwealth and Sweden during the first half of the 17th century. It began in August 1621, when Gustavus Adolphus of Sweden invaded the Commonwealth territory of Livonia and captured Riga, one of the wealthiest and most important ports in Europe.
With their resources focused on the Polish–Ottoman War (1620–1621), the Commonwealth was unable to expel the Swedes. Under the terms of the Truce of Mitawa in November 1622, they ceded Livonia north of the Daugava, while the Swedes also retained Riga.
Background
The most recent conflict showed the Swedish Army, despite several reforms, was still unable to defeat the Polish–Lithuanian Commonwealth. Furthermore, King Gustav Adolf was still regarded in Europe as a usurper. To safeguard the Swedish crown for himself, Gustav Adolf decided to force Sigismund III Vasa to relinquish it. With help from Axel Oxenstierna, the Swedish king introduced a widespread program of military and social reforms, which resulted in the creation of a well trained army, based on native recruits. These further reforms and the ongoing conflict between the Commonwealth and the Ottoman Empire (see Polish–Ottoman War (1620–21)), offered a further chance to defeat the Commonwealth.
First phase (1621–22)
While the Polish–Lithuanian army was concentrated in Podolia, in the south of the Commonwealth, a Swedish army landed near Pärnu (today part of Estonia) on 19 August 1621.
“Polish–Swedish War (1621–1625)” enters the record as phase of the Polish-Swedish war. Crown Archives preserves that source wording while asking what Polish, Swedish and phase can confirm, complicate or overturn.
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Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Sep 13, 2026. The linked authority identifier is Q7210108. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1621, 1625, 1620 and 1622.
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This entry incorporates text from “Polish–Swedish War (1621–1625)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.