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The Battle of Berestechko, 1651: one of the largest battles of its century

Khmelnytsky Uprising · 28 to 30 June 1651 · Polish-Lithuanian Commonwealth vs Cossacks and Crimean Tatars · ~6 min read · Updated October 2026

By Echoes of Battle

The Battle of Berestechko, painting by Franciszek Smuglewicz

At a glance

Polish-Lithuanian CommonwealthKing John II Casimir
vs
Zaporozhian Cossacks and Crimean KhanateHetman Bohdan Khmelnytsky; Khan İslam III Giray
Date
28 to 30 June 1651 (camp broken 10 July)
Location
Near Berestechko, Volhynia (in present-day Ukraine)
Period
Khmelnytsky Uprising
Outcome
Polish-Lithuanian victory
By the numbers
SideStrengthLosses
CommonwealthTens of thousands of soldiers, plus camp servantsRelatively light
Cossacks and TatarsLarger combined army; often estimated at over 100,0001Very heavy, especially in the breakout

Seventeenth-century figures are highly uncertain; many accounts give inflated numbers.

Quick answer

The Battle of Berestechko was fought from 28 to 30 June 1651 in Volhynia1 between the army of the Polish-Lithuanian Commonwealth under King John II Casimir and the Cossacks of Bohdan Khmelnytsky with their Crimean Tatar allies. On the third day a Polish attack threw the Tatar wing into disorder, and the khan withdrew, taking Khmelnytsky with him1. The Cossack camp held out for ten days1 before a chaotic breakout across the marshes cost them heavily. It was a major Polish victory, though it did not end the war.

In the summer of 1651 two great armies met on the fields of Volhynia. On one side stood the Commonwealth under King John II Casimir; on the other, the Cossacks of Hetman Bohdan Khmelnytsky and the Crimean Tatars of Khan İslam III Giray. The result was one of the largest battles of 17th-century Europe2.

The great uprising

Since 1648 the Cossack rising led by Khmelnytsky had shaken the Commonwealth, with victories at Zhovti Vody, Korsun and Pyliavtsi3. In 1651 the king raised the largest army the Commonwealth could gather4 to end the war.

Engraved oval portrait of Bohdan Khmelnytsky in a fur hat holding a mace
Hetman Bohdan Khmelnytsky in an engraving by Willem Hondius made in Gdańsk in 1651, the year of Berestechko. Public domain

Two armies on the Styr

The armies met near Berestechko on the Styr river at the end of June. The first two days saw heavy fighting between the cavalry, while both sides drew up their huge forces for a decisive battle.

Engraved battle plan with rows of troop blocks and a fortified camp beside a river
Plan of the battle of Berestechko on 30 June 1651, with the Commonwealth army drawn up in lines facing the Cossack camp, copied from an original in the portfolio of King Stanisław August and published in Russia in 1822. Public domain

The third day

On 30 June the Polish army attacked. A charge led by Prince Jeremi Wiśniowiecki struck the Cossack and Tatar lines, while Polish artillery fire and attacks threw the Tatar wing into disorder. The khan withdrew from the battlefield, taking Khmelnytsky with him.

On the third day the Tatar wing broke, the khan rode away, and the Cossack army was left alone in the marshes.

The camp in the marshes

Left without their hetman and their allies, the Cossacks fortified their camp against the marshes of the Plyashivka river and held out under siege for ten days. On 10 July, while Colonel Ivan Bohun tried to lead troops across improvised causeways, panic broke out in the camp2, and many Cossacks died in the marshes or in the Polish pursuit.

Painting of a Cossack commander on horseback raising a mace amid smoke and riders
Colonel Ivan Bohun at the crossing, a painting by the Ukrainian artist Mykola Ivasiuk from 1900 imagining the escape from the besieged camp on the Plyashivka. Public domain

Victory and memory

Berestechko was a great Polish victory, but the war went on, and later that year the Treaty of Bila Tserkva restored only part of the Commonwealth's position3. In Poland the battle is remembered as a triumph of King John II Casimir's army; in Ukraine it is remembered as a tragedy, with a memorial at the site of the Cossack graves1.

Frequently asked questions

When was the Battle of Berestechko?

From 28 to 30 June 1651, with the besieged Cossack camp falling on 10 July.

Who won the Battle of Berestechko?

The Polish-Lithuanian Commonwealth under King John II Casimir.

Why did the Tatars leave the battle?

After the Polish attack threw their wing into disorder on 30 June, Khan İslam III Giray withdrew, taking Khmelnytsky with him; his exact motives are debated.

How big was the Battle of Berestechko?

It is considered one of the largest land battles of 17th-century Europe, though exact numbers are very uncertain.

Did Berestechko end the Khmelnytsky Uprising?

No. The war continued, and the Treaty of Bila Tserkva later in 1651 was only a partial settlement.

Sources and notes

Numbered notes in the text point to the works below.

  1. Encyclopedia of Ukraine (Canadian Institute of Ukrainian Studies), “Berestechko, Battle of” ↩ a b c d e
  2. Romuald Romański, Beresteczko 1651 (Bellona, 1994). ↩ a b
  3. Orest Subtelny, Ukraine: A History (University of Toronto Press, 1988). ↩ a b
  4. Robert I. Frost, The Northern Wars: War, State and Society in Northeastern Europe, 1558-1721 (Longman, 2000). ↩
  5. Wikipedia, “Battle of Berestechko”
  6. Wikipedia, “Bitwa pod Beresteczkiem”

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