The Deluge was a series of mid-17th-century military campaigns in the Polish–Lithuanian Commonwealth. In a stricter sense, the term refers to the Swedish invasion and occupation of the Commonwealth as a theatre of the Northern War of 1655–1660 only; in Poland and Lithuania this period is called the Swedish Deluge or less commonly the Russo–Swedish Deluge (Polish: Potop szwedzko-rosyjski) due to the simultaneous Russo-Polish War. In a wider sense, it applies to the period between the Khmelnytsky Uprising of 1648 and the Truce of Andrusovo in 1667, comprising the Polish theatres of the Russo-Polish and Second Northern Wars. The term "deluge" (potop in Polish) was popularized by Henryk Sienkiewicz in his novel The Deluge (1886).
During the wars, the Commonwealth lost approximately one third of its population as well as its status as a great power due to invasions by Sweden and Russia. According to Andrzej Rottermund, manager of the Royal Castle in Warsaw, the destruction of Poland in the Deluge was more extensive than the destruction of the country in World War II. Rottermund claims that Swedish invaders robbed the Commonwealth of its most important riches, and most of the stolen items were never returned to Poland. Warsaw, the capital of the Polish–Lithuanian Commonwealth, was destroyed by the Swedes, and out of a pre-war population of 20,000, only 2,000 remained in the city after the war. According to the 2012 Polish estimates, the material damage caused by the Swedish army amounted to 4 billion złotys. 188 cities and towns, 186 villages, 136 churches, 89 palaces, and 81 castles were completely destroyed in Poland.
Historical background
In 1648, Bohdan Khmelnytsky led a popular uprising of Zaporozhian Cossacks and Ukrainian peasants discontented with the rule of Polish and Lithuanian magnates. Although the initial phase of the rebellion ended (after much destruction) at the Battle of Berestechko (1651), it brought into focus the rivalry between Russia and the Commonwealth for hegemony over Ukraine and over the eastern Slavic lands in general. Thus, in October 1653, the Russian Zemsky Sobor declared war on the Commonwealth, and in June 1654 the forces of Tsar Alexis of Russia invaded the eastern half of Poland-Lithuania, starting the Russo-Polish War of 1654–1667. In the summer of 1654, the Russians managed to capture most important cities and strongholds of today's Belarus. Smolensk was captured after a siege on October 3, 1654. The Swedish Empire, which technically already was at war with the Commonwealth (a ceasefire agreement existed from 1629 and was prolonged from 1635 to 1661), invaded in July 1655 and occupied the remaining half of the country.
Swedish invasion
Background
Following the Thirty Years' War, the Swedish Empire emerged as one of the strongest kingdoms on the continent. It had a large army but little money to pay its soldiers. The Polish–Lithuanian Commonwealth, weakened by wars with the Cossacks and Tsardom of Russia, seemed like easy prey, also because its best soldiers had been either killed in the 1652 Battle of Batih or massacred after it. Furthermore, Swedes remembered claims to their throne by Polish kings Sigismund III Vasa and his sons Władysław IV Vasa and John II Casimir, who themselves belonged to the House of Vasa. An earlier conflict, the Polish–Swedish War (1626–1629) had ended with the Treaty of Stuhmsdorf.
The Polish–Lithuanian King John II Casimir (reigned 1648–68) lacked support among the Commonwealth nobility (szlachta) due to his sympathies with absolutist Austria and his open contempt for the "Sarmatist" culture of the nobility. Earlier, in 1643, John Casimir had become a member of the Jesuits and had received the title of Cardinal. Nevertheless, in December 1646, he returned to Poland and, in October 1647, resigned his position as Cardinal to stand for election to the Polish throne, after the death of his brother Władysław IV Vasa. He became King in 1648. However, some of the nobility supported Charles Gustav (King of Sweden from 1654 to 1660 and John Casimir's cousin) for the Polish–Lithuanian throne. Many members of the Polish nobility regarded John Casimir as a weak king or a "Jesuit-King"; Grand Treasurer Bogusław Leszczyński, a Protestant, and Deputy Chancellor of the Crown Hieronim Radziejowski, an old enemy of the Polish King who had been exiled to Sweden, encouraged Charles Gustav to claim the Polish crown. Two Lithuanian noble princes, Janusz Radziwiłł and Bogusław Radziwiłł, introduced dissension into the Commonwealth and began negotiations with the Swedish king Charles X Gustav of Sweden aimed at breaking up the Commonwealth and the Polish–Lithuanian union. They signed the Treaty of Kėdainiai (1655), which envisaged the Radziwiłł princes ruling over two duchies carved out from the Grand Duchy of Lithuania under Swedish protection.
1655
In July 1655 two Swedish armies, operating from Swedish Pomerania and the Province of Pomerania, entered Greater Poland, one of the richest and most developed provinces of the Commonwealth, which had for centuries been unaffected by any military conflicts, and whose levée en masse had not been used to fighting. Greater Poland's noble camp, located in the valley of the Noteć river, near the town of Ujście, looked more like a large party, as the szlachta, gathered there to face the Swedish Army, was more interested in drinking. To make matters worse, two powerful magnates, the Voivode of Poznań Krzysztof Opaliński, and the Voivode of Kalisz, Andrzej Karol Grudziński, argued with each other whether to fight or to give up. Polish troops lacked gunpowder, cannons, and even food, which was stolen at local villages by hungry soldiers.
After an easy Swedish victory at the Battle of Ujście, Krzysztof Opaliński surrendered Greater Poland to Charles Gustav. On July 31, 1655, the army commanded by Arvid Wittenberg captured Poznań, and on August 20 near Konin, the armies of Wittenberg and Charles Gustav joined forces, and headed for Warsaw. On September 2, the Poles lost the Battle of Sobota, and on September 4, the Swedes captured Łowicz. Four days later, the Swedish army entered the Polish capital, becoming the first foreign army in history to capture Warsaw. King Charles Gustav left a garrison in Warsaw, under Bengt Gabrielsson Oxenstierna, and headed southwards, in pursuit of John Casimir. On September 16, the Swedes defeated Polish troops in the Battle of Żarnów, and the Polish forces gave up resistance and surrendered to the invaders. The Polish king headed towards Kraków on September 25, and then fled to the Głogówek castle near Prudnik in Upper Silesia. Kraków was left in the hands of Stefan Czarniecki; on October 3 Swedish forces once again defeated the Poles in the Battle of Wojnicz, which opened the road to Kraków. The ancient capital of Poland was captured after a siege, on October 13, 1655. With the three most populated and best developed Polish provinces in his hands (Greater Poland, Lesser Poland and Mazovia), Charles Gustav decided to head back northwards to Royal Prussia, which was defended by the Voivode of Malbork, Jakub Wejher. The Swedes, who were generally superior in training, discipline, and equipment, advanced rapidly.
Meanwhile, in the Grand Duchy of Lithuania, whose eastern part had been occupied by another Swedish army under Magnus Gabriel De la Gardie since August 1655, Janusz Radziwiłł and his cousin Bogusław Radziwiłł signed the Union of Kėdainiai (October 20, 1655), which ended Lithuania's union with Poland. The decision of the Radziwiłłs was the result of the 1654 Russian invasion, as Janusz Radziwiłł accused the Poles of not helping the Lithuanians with the defence of the Grand Duchy. The Russian capture of Vilnius (August 9, 1655) and the subsequent slaughter of its residents convinced the Lithuanian nobility that Swedish protection was the best solution. The situation of the Commonwealth was desperate, but hope appeared with the Truce of Vilna (November 3), in which Poland and the Tsardom of Russia formed an anti-Swedish alliance. With Russian forces attacking Sweden in Livonia (see Russo-Swedish War (1656–1658)), Poland finally had time to recoup and gather fresh forces. On October 12, 1655, with permission from King John Casimir, Frederick William, Elector of Brandenburg signed the Treaty of Rinsk, in which the Royal Prussian nobility agreed to allow Brandenburgian garrisons in their province to defend it against the Swedish invasion (the treaty did not include the cities of Gdańsk, Elbląg and Toruń). In November and December 1655 the Swedish army under Gustaf Otto Stenbock captured all the towns of Royal Prussia except for Gdańsk, Puck and Malbork.
To prevent John Casimir's return to Poland, Swedish units protected the border with Silesia. On November 18, 1655, the Swedes besieged the monastery at Jasna Góra, located in Lesser Poland, near the border. Led by the Grand Prior Augustyn Kordecki, the garrison of this symbolic sanctuary-fortress of Poland held off its enemies in the Siege of Jasna Góra. The defense of Jasna Góra galvanized Polish resistance against the Swedes. The news of the siege spread across the nation, and in several areas guerrilla units were created, outraged at the Swedes' attempt to seize the monastery. On December 7, 1655, the unit of Colonel Gabriel Wojniłłowicz defeated the Swedes and their Polish collaborators near Krosno. On December 13, Polish troops under Wojniłłowicz recaptured Nowy Sącz, and soon afterwards Sweden lost Biała, Dukla, Biecz, Wieliczka, and Oświęcim. By late 1655, the situation in southern Lesser Poland had deteriorated to such an extent for the invaders that on December 27 they decided to lift the siege of Jasna Góra. On December 16, 1655, in Sokal, Polish Crown hetmans urged the nation to fight the Swedish armies. Two days later, King John Casimir left the Głogówek in Silesia, and via Racibórz and Cieszyn, returned to Poland, arriving at Lubowla on December 27. Two days later, the Tyszowce Confederation was formed in support of the Polish king. John Casimir himself met with hetmans Stanisław Rewera Potocki, Jerzy Sebastian Lubomirski, Stanisław Lanckoroński and Stefan Czarniecki in Krosno, on December 31, 1655. The meeting was also attended by Primate Andrzej Leszczyński, and eight voivodes.
1656
While in Krosno, the Polish king found out about the end of the siege of Jasna Góra, and about the death of Janusz Radziwiłł. On January 12, 1656, John Casimir left Krosno, and after three days, arrived at Łańcut Castle, which belonged to the Lubomirski family. On February 10, the king came to Lwów, which, together with Gdańsk, was one of only two major cities of the Commonwealth not seized by any of Poland's enemies. Soon Polish Army units began to concentrate in the area of Lwów, including militias from Red Ruthenia, Volhynia and Lublin, as well as forces under Potocki and Prince Lubomirski, together with the garrison of Kamieniec Podolski fortress. Charles Gustav, after finding out about the return of the Polish king, ordered his armies to concentrate in Łowicz. On February 8, 1656, the Swedes defeated Czarniecki in the Battle of Gołąb, and continued their march towards Lwów, reaching the Zamość Fortress on February 25. On March 1, realizing that without heavy guns it was impossible to capture the mighty stronghold, the Swedish army gave up the siege, and headed towards Bełżec. On March 3, Charles Gustav, whose units were harassed by Polish guerilla forces, decided to retreat. At the same time, guerilla warfare also broke out in Mazovia and Greater Poland, and Lithuanian units under the Grand Hetman of Lithuania Paweł Jan Sapieha began moving towards Red Ruthenia.
On March 11, the Swedish army arrived at Jarosław, fighting its way across the San river. Charles Gustav sent some of his forces to capture Przemyśl, but on March 16 they returned to Jarosław without success. On March 22, the Swedish army set off northwards, along the San and Vistula rivers, back to Warsaw. They were followed by units of Stefan Czarniecki and Aleksander Koniecpolski, and during the retreat, Polish troops supporting the invaders changed sides, joining the forces of John Casimir. On March 30, the starving, cold and tired Swedish army of 5,000 stopped near Sandomierz, which was already in Polish hands. The Swedes camped among the forests of Sandomierz Forest near Gorzyce, where they were quickly surrounded by approximately 23,000 Poles and Lithuanians. To help the besieged army, on March 27 Frederick VI left Warsaw with 2,500 reiters and dragoons, so John Casimir ordered the mounted units of Czarnecki and Lubomirski to face the margrave. Frederick's army was defeated on April 7 in the Battle of Warka. At Gorzyce, however, second-quality Polish forces remained, and the Swedish king managed to break out (April 5), and on April 13, Charles Gustav reached Warsaw. Meanwhile, the Polish king made the Lwów Oath (April 1), in which he entrusted the Commonwealth to the Blessed Virgin Mary's protection, and declared her 'The Queen of the Polish Crown'.