Battle of White Mountain (1620): Defeat of Protestant Bohemia

The Battle of White Mountain was fought on 8 November 1620 on a plateau just west of Prague, where the army of Emperor Ferdinand II and the Catholic League routed the forces of the rebel Bohemian estates. The battle lasted only an hour or two, yet it ended the Bohemian revolt, drove the “Winter King” Frederick V into exile and opened a long period of Habsburg and Catholic dominance in the Czech lands. It was the first major battle of the Thirty Years’ War.

Background: the Bohemian revolt

The revolt had begun with the Defenestration of Prague on 23 May 1618, when Protestant nobles threw two royal governors from a window of Prague Castle. They feared that their king-designate, the Catholic Ferdinand of Styria, would destroy the religious freedoms granted in 1609.

In August 1619 the rebels deposed Ferdinand and offered the crown to Frederick V, the Calvinist Elector Palatine and son-in-law of James I of England. Frederick accepted and was crowned in Prague in November 1619. Days after his deposition in Bohemia, Ferdinand had been elected Holy Roman Emperor.

The new king’s position was weak. His father-in-law refused to help, the Protestant Union of German princes stayed neutral, and the Lutheran Elector of Saxony sided with the emperor. The Bohemian estates were reluctant to pay for their army, and many of its mercenaries were unpaid.

The armies march on Prague

Ferdinand found powerful allies. Duke Maximilian of Bavaria, head of the Catholic League, agreed to send his army under the experienced commander Johann Tserclaes, Count of Tilly, in return for promises of territory and Frederick’s electoral title. Spain sent troops into Frederick’s Rhineland lands, and Saxony invaded Lusatia.

In 1620 the League army, with Maximilian present, forced Upper Austria to submit and joined the imperial army of Charles Bonaventure de Longueval, Count of Bucquoy. The combined force advanced into Bohemia. The Bohemian army, commanded by Christian of Anhalt, fell back towards Prague and took up position on White Mountain, a low hill on the road to the capital.

The battle

On the morning of 8 November 1620 the Bohemian army occupied the ridge, with its flank resting on the walled game park around the Star Summer Palace. Anhalt’s troops, estimated at around 20,000 including Hungarian light cavalry, had prepared only light defences. The Catholic army, usually estimated at 25,000 or more, crossed the marshy ground below and attacked uphill.

The fighting was brief. An early Bohemian cavalry counter-attack, led by Anhalt’s son, had some success, but the imperial and League troops pressed on. Much of the Bohemian infantry and cavalry broke and fled towards Prague. The most determined resistance came from a Moravian regiment that fought at the wall of the game park until most of its men were killed.

Within an hour or two the battle was over. Bohemian losses are generally put at around 2,000 or more killed, with many others captured or drowned trying to escape, while Catholic losses were a few hundred. Frederick, who had been in Prague, left the city the next day with his family.

Aftermath: punishment and re-Catholicisation

Prague surrendered without a fight. Frederick fled first to Silesia and then to the Dutch Republic, and his enemies mocked him as the “Winter King”. In 1621 he was placed under the ban of the Empire; Spanish and Bavarian troops overran the Palatinate, and in 1623 his electoral title was given to Maximilian of Bavaria.

In Bohemia Ferdinand acted harshly. On 21 June 1621 twenty-seven leaders of the revolt, nobles, knights and burghers, were executed in Prague’s Old Town Square; twenty-seven crosses set in the pavement mark the spot. Among them was the physician and university rector Jan Jesenius. The heads of twelve were displayed on the Old Town Bridge Tower of the Charles Bridge for about ten years.

Rebel estates were confiscated on a vast scale and sold or granted to loyal Catholic nobles, many from outside Bohemia. The Renewed Land Ordinance of 1627 made the Bohemian crown hereditary in the Habsburg family and Catholicism the only permitted religion. Protestant nobles and burghers had to convert or emigrate, and tens of thousands left; among the exiles was the educational reformer Jan Amos Comenius.

Key people

• Count of Tilly (1559–1632): Catholic League commander, later famous for victories in Germany and for the sack of Magdeburg.
• Count of Bucquoy (1571–1621): commander of the imperial army, wounded shortly before the battle.
• Maximilian I of Bavaria (1573–1651): head of the Catholic League, rewarded with the Upper Palatinate and the electoral title.
• Christian of Anhalt (1568–1630): commander of the Bohemian army and Frederick’s chief adviser.
• Frederick V (1596–1632): Elector Palatine and king of Bohemia from 1619 to 1620.

Legacy and memory

For Catholics the victory was a sign of divine favour. A Carmelite friar, Dominic of Jesus and Mary, was said to have inspired the troops with an image of the Virgin, and a church in Rome was renamed Santa Maria della Vittoria in thanks.

For Czech nationalists of the nineteenth century, White Mountain marked the beginning of the “darkness” (temno), the loss of native nobility, Protestant culture and political independence. Modern historians stress that Baroque Bohemia also produced remarkable art and architecture, but the battle remains a central symbol in Czech memory. A memorial mound now stands on the site, inside the city of Prague.

Why the Bohemians lost

The Bohemian defeat had causes that went well beyond the battlefield. The estates had been unwilling to raise enough taxes, so many of their mercenaries had gone unpaid for months and morale was low. Hungarian horsemen sent by their ally Gabriel Bethlen, Prince of Transylvania, were light cavalry ill suited to a pitched battle.

Frederick V had also failed to win broad support. His Calvinist court offended many Lutheran and Utraquist Bohemians, especially when images and altars were stripped from St Vitus Cathedral in Prague in December 1619. The Protestant Union in Germany declined to fight for him, and his father-in-law, James I, preferred diplomacy with Spain.

The Catholic army, by contrast, was led by experienced commanders and was better supplied, with money from Bavaria, Spain and the Pope. Tilly in particular pressed for an immediate attack on 8 November rather than giving the Bohemians time to strengthen their position.

By the numbers

Timeline

• 1618, 23 May: The Defenestration of Prague begins the Bohemian revolt.
• 1619, August: The estates depose Ferdinand and elect Frederick V king.
• 1619, November: Frederick V is crowned in Prague.
• 1620, 8 November: The Catholic army routs the Bohemians at White Mountain.
• 1620, 9 November: Frederick V flees Prague.
• 1621, 21 June: Twenty-seven rebel leaders are executed in the Old Town Square.
• 1623: Frederick’s electoral title is transferred to Maximilian of Bavaria.
• 1627: The Renewed Land Ordinance makes Catholicism Bohemia’s only legal religion.

Why it matters

White Mountain decided the fate of Bohemia for three centuries, binding it firmly to the Habsburg monarchy and the Catholic Church. It also widened the conflict: the transfer of Frederick’s lands and title alarmed Protestant Europe and turned a regional revolt into the long Thirty Years’ War.