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Battle of Czarny Ostrów, 1657: the end of Rákóczi's Polish adventure

Second Northern War (the Deluge) · 20 July 1657 · Poland-Lithuania vs Transylvania · ~8 min read · Updated October 2026

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Dark locator map of eastern Europe showing the rivers of Podolia and Ukraine and the north coast of the Black Sea, with a gold star near Chornyi Ostriv on the Southern Bug and a world inset.

Location map: © Echoes of Battle (data: Natural Earth, public domain). The star marks an approximate position.

At a glance

Polish-Lithuanian CommonwealthStanisław Rewera Potocki; Stefan Czarniecki; Jerzy Sebastian Lubomirski
vs
Principality of Transylvania and alliesPrince George II Rákóczi; János Kemény
Date
20 July 1657 (Kubala, Szymowski); capitulation between 22 and 24 July (sources differ)
Location
Czarny Ostrów (today Chornyi Ostriv) on the Southern Bug, Podolia, and Międzybóż (Medzhybizh), Ukraine
War
Second Northern War (the Swedish Deluge in Poland)
Strength
Rákóczi set out with about 13,000 Transylvanians, joined in Poland by Moldavian, Wallachian and Cossack contingents; of the 13,000 Transylvanians, only 3,000 to 4,000 were still fit to fight by the end (History of Transylvania). Polish and Lithuanian field armies
Losses
Transylvanian army destroyed after the capitulation, with about 11,000 taken captive by the Tatars (Muzeum Historii Polski)
Outcome
Polish victory; Rákóczi capitulates and leaves the war
Quick answer

What happened at the Battle of Czarny Ostrów?

On 20 July 1657 Polish armies under Stanisław Rewera Potocki, Stefan Czarniecki and Jerzy Sebastian Lubomirski caught the retreating army of George II Rákóczi, Prince of Transylvania, at Czarny Ostrów in Podolia. Rákóczi had invaded Poland that year as Sweden's ally, hoping for the Polish crown. Beaten and surrounded, he capitulated a few days later at Międzybóż, promising to pay heavy reparations, abandon Sweden and leave Poland. On the way home his army was destroyed by Poland's Tatar allies.1

Background: a crown for the taking

By 1657 the Polish-Lithuanian Commonwealth had been at war with Sweden for two years. The Swedish invasion of 1655, remembered in Poland as the Deluge, had been partly turned back, but in the eyes of its enemies Poland still looked ready to fall. The History of Transylvania of the Hungarian Academy of Sciences lists what they saw: Charles X Gustav's troops deep inside the country, the Tsar's armies on the offensive again, and Cossack and peasant revolts across much of its territory.2

Sweden went looking for allies to finish the job. One was George II Rákóczi, Prince of Transylvania, a vassal of the Ottoman sultan. By the Treaty of Radnot of 6 December 1656 he and Charles Gustav agreed to partition the Commonwealth: Rákóczi was promised the Polish crown and a much reduced kingdom, up to a line through Warsaw. Britannica notes that he went to war in defiance of the Turks, who had suzerainty over Transylvania.3

To contemporaries, the History of Transylvania argues, the venture looked natural enough. Poland was the principality's commercial gateway to the industrial west, and its trade routes ran the same way as the army. Rákóczi also wanted to expand his personal power, and he was already planning a confrontation with the Habsburgs in Hungary.4

Engraved half-length portrait of a bearded man in a fur hat with a plume and a fur-lined cloak, inside an octagonal frame, with a crowned coat of arms and a Latin inscription naming George Rakoczi, Prince of Transylvania, below
George II Rákóczi, Prince of Transylvania, who invaded Poland in 1657 hoping for its crown and lost his army doing it. Frederik Bouttats the Younger, George II Rákóczi, engraving, about 1660, Hungarian National Museum; photograph by Szilas. Public domain, via Wikimedia Commons

Armies and commanders

Rákóczi crossed the Carpathians in January 1657. The History of Transylvania gives him about 13,000 Transylvanians, to be joined in Poland by some 20,000 Cossacks and 6,000 troops from Moldavia and Wallachia; the Muzeum Historii Polski confirms Moldavian and Wallachian contingents and Cossacks sent by Bohdan Khmelnytsky. The diarist Jan Chryzostom Pasek, who fought against him, wrote mockingly of forty thousand Hungarians and Wallachians and as many Cossacks again; the figure is his flourish, not a count.5

Against him stood Polish field armies under three commanders: Potocki, Czarniecki, whose harrying war had already worn down the Swedes, and Lubomirski, Grand Marshal of the Crown. The lexicon of Polish battles published by Jagiellonian University historians names Czarniecki, Lubomirski and the Grand Lithuanian Hetman Paweł Sapieha. They could also count on the Crimean Tatars, then Poland's allies.6 › Stefan Czarniecki

Oil portrait of an old bald man with a long white beard and moustache, wearing armor, a red cloak and a fur collar fastened with a jeweled clasp
Stefan Czarniecki, the most famous Polish commander of the Deluge, who shared the pursuit of Rákóczi and received his capitulation with Lubomirski. Unknown painter, Portrait of Stefan Czarniecki, seventeenth century, National Museum in Kraków (MNK I-645). Public domain, via Wikimedia Commons

The campaign in phases

From Lviv to Warsaw

Rákóczi failed to take Lviv, then plundered Lesser Poland, sacking towns and castles such as Dukla, Lesko and Odrzykoń, and marched north to join the Swedes. Together with Charles Gustav he took Brest, where the Transylvanians left a garrison, and then entered Warsaw.7

Then the war turned against him. In June Denmark declared war on Sweden, and Charles Gustav hurried west to meet the new enemy, leaving Rákóczi on his own. At the same moment the Habsburg emperor Leopold I sent troops to help the Poles, and they laid siege to Kraków, where Transylvanian troops formed part of the garrison. The Polish population, the History of Transylvania notes, had turned to an effective resistance that harassed the invaders without pause.8

Baroque portrait of a long-haired king in armor with an ermine-lined red cloak and a baton
King Charles X Gustav of Sweden, Rákóczi's ally, who left him alone in Warsaw in June 1657 to march against Denmark. Portrait attributed to Justus van Egmont. Public domain. Attributed to Justus van Egmont, oil on canvas, between 1654 and 1660, via Wikimedia Commons.

Lubomirski strikes at Transylvania

The decisive blow came from an unexpected direction. While Rákóczi was deep in Poland, the Grand Marshal led his own army over the mountains into Transylvania itself. Pasek describes him burning and laying waste wherever he went and taking a large ransom from Rákóczi's mother. The prince could not leave his own country undefended. He abandoned Warsaw and turned southeast for home, with Polish forces closing in on every side.9

Engraved oval portrait of a heavy-set man with a moustache, wearing riveted armor and a cloak, with a five-line Italian inscription below listing his titles as Grand Marshal and Field Hetman of Poland
Jerzy Sebastian Lubomirski, Grand Marshal and Field Hetman of the Crown, whose raid into Transylvania drew Rákóczi out of Warsaw. Frans van der Steen after Jan de Herdt, Portrait of Jerzy Sebastian Lubomirski, engraving, about 1670, Rijksmuseum RP-P-1999-694. CC0, via Wikimedia Commons

Czarny Ostrów, 20 July 1657

Rákóczi's army halted among the marshes near Czarny Ostrów, on the Southern Bug in Podolia. The historian Ludwik Kubala, following the diary of Czarniecki's chaplain Adrian Pikarski, writes that the Polish vanguard under Machowski and Prince Dymitr Wiśniowiecki went after it there on 20 July and killed a large number of camp servants; Leszek Szymowski also dates the decisive battle at Czarny Ostrów to 20 July. The other sources say little about the fighting itself; what they agree on is the result. The defeated prince fell back with what was left of his army to the nearby town of Międzybóż, where he found himself surrounded; Kubala has him leave his heavy baggage behind and march off that same night. The lexicon describes the episode as a siege, with the Transylvanians encircled by the Polish and Lithuanian armies.10

Seventeenth-century map of Podolia with rivers, towns and a decorative cartouche
Podolia, where Rákóczi's retreat ended on the Southern Bug, in Guillaume Le Vasseur de Beauplan's seventeenth-century map of the Podolian voivodeship, in the Dutch edition with north at the top. Public domain. Guillaume Le Vasseur de Beauplan, 17th century, via Wikimedia Commons.

Turning point: the capitulation

To save himself and his remaining troops, Rákóczi offered to capitulate to Czarniecki and Lubomirski. The sources date it differently: 22 July in the History of Transylvania, 23 July in the lexicon and 24 July by the Muzeum Historii Polski; Kubala has the terms drawn up on 22 July in the camp at Czarny Ostrów and sworn by both sides on 23 July. He promised to withdraw his garrisons from Kraków and Brest, break his alliance with Sweden, leave the Commonwealth and pay 1.2 million in reparations, złoty in the Polish museum's account and forints in the Hungarian one. The Polish Army Museum adds that the commanders were to receive about 2 million and the army 1 million more; the lexicon says he also agreed to hand back all the loot taken in Poland.11

As a pledge for the ransom he had to leave noble hostages behind. Pasek, writing years later, describes them drinking wine and eating off silver at Łańcut at first and, when no ransom came, chopping firewood for the kitchen and ending their lives in misery.12

Aftermath: the Tatars and the end of an army

Rákóczi had bought his army's freedom, but not for long. On its way home it was attacked by the Crimean Tatars, who, according to the Muzeum Historii Polski, did not know of the capitulation; Britannica writes that the Turks themselves had ordered their Tatar vassals to drive the Transylvanians out of Poland. The History of Transylvania describes the army as exhausted, with only 3,000 to 4,000 of the original 13,000 still fit to fight. The Tatars first imposed a ransom, then took the whole army captive, about 11,000 men in the Polish museum's count, among them its commander János Kemény, a future prince of Transylvania.13

The two Polish museums disagree about Rákóczi himself: the Muzeum Historii Polski says he escaped, while the Polish Army Museum writes that the Tatars took him prisoner. The History of Transylvania supports the first version: the prince left the army to Kemény before the Tatars struck and rode home with an escort of about 300 horsemen, reaching Ecsed in early August. It calls the loss of the army the greatest disaster to befall Transylvania since Mohács.14

Its verdict on the prince is harsh. He had been raised and educated to rule, it writes, yet the campaign showed him lacking in military knowledge and not fully aware of his responsibilities, and after the disaster he seemed paralysed by the shock.15

Legacy and memory

For Transylvania the campaign was the beginning of a long fall. The sources differ on the details of Rákóczi's end: Britannica has the diet depose him on Turkish orders in 1657, the History of Transylvania has him forced to abdicate in March 1659. Both agree that he fought to win back his throne and was mortally wounded in battle against the Turks in May 1660, at Gyalu or Szászfenes, as the two sources name it; he died at Várad on 7 June. Britannica sums up his reign: his foreign policy restored Turkish hegemony over Transylvania.16

For the Commonwealth, Czarny Ostrów removed Sweden's most dangerous ally at the moment when Charles Gustav was tied down by the new war with Denmark. Leszek Szymowski, writing in Rzeczpospolita, calls it the decisive battle of the campaign against Rákóczi and a high point for Lubomirski, a magnate who would later turn his armies against his own king.17

For Czarniecki it was one more success of the harrying war he waged against the Swedes and Rákóczi alike. A year later he led the Polish troops in the allied expedition to rescue Denmark from the Swedes, and his crossing to the island of Als in December 1658 is the episode remembered in the Polish national anthem.18 › Siege of Kolding, 1658

Pasek gave the episode its lasting Polish image. He mocked the prince who came to Poland for garlic, as he put it, and went home with a very small escort, leaving his army and his hostages behind; Rákóczi, he wrote, heard only weeping and curses wherever he turned in his own country, for the sons, husbands and brothers lost in the Polish war.19

Notes

A number in the text points to a note; each note names the works that paragraph draws on, listed in full under Sources.

  1. Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Muzeum Wojska Polskiego, “Kapitulacja Jerzego II Rakoczego, księcia Siedmiogrodu”; History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”; Ludwik Kubala, “Wojna brandenburska i najazd Rakoczego w roku 1656 i 1657”; Leszek Szymowski, “Jerzy Lubomirski”. ↩
  2. History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”; Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Leszek Szymowski, “Jerzy Lubomirski”. ↩
  3. Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”; Encyclopaedia Britannica, “György Rákóczi II”. ↩
  4. History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”. ↩
  5. History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”; Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Jan Chryzostom Pasek, “Pamiętniki”. ↩
  6. Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Jerzy Ronikier, “Oblężenie Czarnego Ostrowa (23 lipca 1657)”; Muzeum Wojska Polskiego, “Kapitulacja Jerzego II Rakoczego, księcia Siedmiogrodu”; dzieje.pl, “350 lat temu zmarł hetman Stefan Czarniecki”. ↩
  7. Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”; Muzeum Wojska Polskiego, “Kapitulacja Jerzego II Rakoczego, księcia Siedmiogrodu”. ↩
  8. Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”. ↩
  9. Leszek Szymowski, “Jerzy Lubomirski”; Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Jan Chryzostom Pasek, “Pamiętniki”. ↩
  10. Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Muzeum Wojska Polskiego, “Kapitulacja Jerzego II Rakoczego, księcia Siedmiogrodu”; Jerzy Ronikier, “Oblężenie Czarnego Ostrowa (23 lipca 1657)”; Ludwik Kubala, “Wojna brandenburska i najazd Rakoczego w roku 1656 i 1657”; Leszek Szymowski, “Jerzy Lubomirski”. ↩
  11. History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”; Jerzy Ronikier, “Oblężenie Czarnego Ostrowa (23 lipca 1657)”; Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Muzeum Wojska Polskiego, “Kapitulacja Jerzego II Rakoczego, księcia Siedmiogrodu”. ↩
  12. History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”; Jan Chryzostom Pasek, “Pamiętniki”. ↩
  13. Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Encyclopaedia Britannica, “György Rákóczi II”; History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”. ↩
  14. Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”; Muzeum Wojska Polskiego, “Kapitulacja Jerzego II Rakoczego, księcia Siedmiogrodu”; History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”. ↩
  15. History of Transylvania, “The Polish Campaign and the Onset of Decline in Transylvania”. ↩
  16. Encyclopaedia Britannica, “György Rákóczi II”; History of Transylvania, “The Struggle for Illusory Power”. ↩
  17. Leszek Szymowski, “Jerzy Lubomirski”; Muzeum Historii Polski, “Kapitulacja Jerzego II Rakoczego”. ↩
  18. dzieje.pl, “350 lat temu zmarł hetman Stefan Czarniecki”; Powroty, “Jeszcze Polska nie zginęła, kiedy my żyjemy”. ↩
  19. Jan Chryzostom Pasek, “Pamiętniki”; Leszek Szymowski, “Jerzy Lubomirski”. ↩

Sources

Frequently asked questions

When was the Battle of Czarny Ostrów?

It was fought on 20 July 1657, the date given by the historian Ludwik Kubala and by Leszek Szymowski. Rákóczi capitulated a few days later at nearby Międzybóż; the sources date the capitulation between 22 and 24 July.

Where is Czarny Ostrów?

Czarny Ostrów, today Chornyi Ostriv, lies on the Southern Bug in the historical region of Podolia, in western Ukraine, near Khmelnytskyi.

Who won the Battle of Czarny Ostrów?

The Polish-Lithuanian Commonwealth. Armies led by Stanisław Rewera Potocki, Stefan Czarniecki and Jerzy Sebastian Lubomirski defeated George II Rákóczi of Transylvania and forced him to capitulate.

Why did Rákóczi invade Poland?

Under the Treaty of Radnot of December 1656, Sweden and Transylvania planned to partition the Commonwealth, and Rákóczi was promised the Polish crown.

How did Lubomirski help win the campaign?

He led his army into Transylvania itself while Rákóczi was in Poland, forcing the prince to abandon Warsaw and march for home.

What happened to Rákóczi's army after the capitulation?

On its way home it was attacked by the Crimean Tatars, who took the whole army captive, about 11,000 men by the Muzeum Historii Polski's count, including the commander János Kemény.

What happened to Rákóczi?

He reached Transylvania with a small escort, lost his throne and was mortally wounded fighting the Turks in May 1660. He died at Várad on 7 June 1660.

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