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Siege of Heidelberg
Part of the Palatinate phase of the Thirty Years' War
Heidelberg corr.jpg
View of Heidelberg with the Heidelberg Castle on hill and the Old Bridge.
Date 23 July – 19 September 1622
Location
Result Spanish-Imperial victory
Belligerents
Electoral Palatinate
 Kingdom of England
 Holy Roman Empire
Catholic League (Germany).svg Catholic League
 Spanish Empire
Commanders and leaders
Kingdom of England Gerard Herbert 
Kingdom of England Horace Vere
Kingdom of England John Burroughs
Holy Roman EmpireCatholic League (Germany).svg Count of Tilly
Spanish Empire Gonzalo Fernández de Córdoba
Strength
Approx: 15,000–21,000 Approx: 22,000–30,000
Casualties and losses
Unknown: 8,000 Unknown: 5,000


The Siege of Heidelberg was an important battle during the Thirty Years' War. It happened in 1622 in Heidelberg, a city in a region called the Electorate of the Palatinate (which is now part of Germany). This siege was part of a bigger fight known as the Palatinate campaign.

The battle was fought between two main groups:

The siege lasted from July 23 to September 19, 1622. The Imperial-Spanish forces won, taking the city and its famous castle.

What Led to the Siege?

The Thirty Years' War Begins

The Thirty Years' War was a long and complex conflict in Europe. It involved many countries and was partly about religion (Protestants versus Catholics). The Electorate of the Palatinate was a key area in this war.

In 1620, a Spanish general named Don Ambrosio Spinola used a smart tactic. He tried to wear out his enemies slowly, hoping they would get tired and give up. This strategy is sometimes called "Fabian tactics."

Defending the Palatinate

Sir Horace Vere, an English commander, split his troops to defend three important strongholds in the Palatinate:

In early 1621, the Protestant Union, a group of Protestant states, broke apart. This meant the English soldiers defending these places couldn't expect much help.

Changing Fortunes

In 1622, Frederick V, Elector Palatine, who had lost his throne, visited his troops in Mannheim. He hoped to turn things around. He and another general, Ernst von Mansfeld, managed to briefly stop the Imperial army at Wiesloch.

However, things quickly changed. Count of Tilly's army got stronger when the Spanish army joined them. They defeated the Protestants and captured many German towns. By June, Frederick V had to leave Mannheim.

The Siege of Heidelberg Begins

Surrounded by Enemies

After these defeats, the Protestant forces, about 25,000 strong, moved to the western side of the Rhine river. They stopped trying to fight off the invasion of the Palatinate directly.

This left the English garrisons, including the one in Heidelberg, surrounded. The Imperial and Spanish armies, led by Tilly and Córdoba, began their attack on Heidelberg. Sir Horace Vere decided to hold out, even though he knew it would be very difficult.

A Distraction That Failed

In July 1622, the Protestant leaders decided to send some of their forces to the Netherlands. Their goal was to help lift the siege of Bergen-op-Zoom.

When the Spanish found out, Córdoba quickly went to stop them. He fought a bloody battle at Fleurus on August 29. Even though the battle was fierce, the siege of Bergen-op-Zoom still had to be stopped.

Heidelberg Falls

Despite the brave resistance, Heidelberg could not hold out forever. After 11 weeks of fighting, the city fell on September 19, 1622.

Sadly, Sir Gerard Herbert, the English commander defending Heidelberg, was badly wounded during the siege and later died.

What Happened Next?

Kurfyrst Frederik V af Pfalz
Frederick V of the Palatinate by Michiel van Mierevelt.
Hortus Palatinus und Heidelberger Schloss von Jacques Fouquiere
Heidelberg Castle and the Hortus Palatinus commissioned by Frederick V, and designed by the English gardener Inigo Jones and the French engineer Salomon de Caus.

After Heidelberg fell, the Spanish army continued to advance. They captured Mannheim, another important city. The Anglo-Protestant forces under Sir Horace Vere fought hard but were eventually defeated and had to surrender.

Only Frankenthal, defended by Sir John Burroughs, remained loyal to Frederick V, Elector Palatine. However, the Spanish troops took Frankenthal a year later. This meant the entire Electorate of the Palatinate was now controlled by the Spanish.

See also

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