The siege of Pilsen (or Plzeň) or Battle of Pilsen was a

siege A siege () . is a military blockade of a city, or fortress, with the intent of conquering by attrition, or by well-prepared assault. Siege warfare (also called siegecrafts or poliorcetics) is a form of constant, low-intensity conflict charact ...

of the fortified city of Pilsen () in

Bohemia Bohemia ( ; ; ) is the westernmost and largest historical region of the Czech Republic. In a narrow, geographic sense, it roughly encompasses the territories of present-day Czechia that fall within the Elbe River's drainage basin, but historic ...

carried out by the forces of the Bohemian

Protestant Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...

s led by

Ernst von Mansfeld Peter Ernst, Graf von Mansfeld (; 158029 November 1626), or simply Ernst von Mansfeld, was a German military commander; despite being a Catholic, he fought for the Protestants during the early years of the Thirty Years' War. He was one of the l ...

. It was the first major battle of the

Thirty Years' War The Thirty Years' War, fought primarily in Central Europe between 1618 and 1648, was one of the most destructive conflicts in History of Europe, European history. An estimated 4.5 to 8 million soldiers and civilians died from battle, famine ...

. The Protestant victory and subsequent capture of the city enlarged the

Bohemian Revolt The Bohemian Revolt (; ; 1618–1620) was an uprising of the Kingdom of Bohemia, Bohemian Estates of the realm, estates against the rule of the Habsburg dynasty that began the Thirty Years' War. It was caused by both religious and power dispu ...

Eve of the battle

On 23 May 1618 the Protestant

nobles Nobility is a social class found in many societies that have an aristocracy. It is normally appointed by and ranked immediately below royalty. Nobility has often been an estate of the realm with many exclusive functions and characteristics. T ...

overthrew the rule of King Ferdinand II and threw the

Roman Catholic The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...

governors of Bohemia from their office at Prague Castle in the

Defenestration Defenestration (from Neo-Latin ) is the act of throwing someone or something out of a window. The term was coined around the time of an incident in Prague Castle in the year 1618 which became the spark that started the Thirty Years' War. This ...

Prague Prague ( ; ) is the capital and List of cities and towns in the Czech Republic, largest city of the Czech Republic and the historical capital of Bohemia. Prague, located on the Vltava River, has a population of about 1.4 million, while its P ...

. The new government formed of Protestant nobility and gentry gave

the command over all of its forces. Meanwhile, Catholic nobles and priests started fleeing the country. Some of the monasteries as well as unfortified manors were evacuated and the Catholic refugees headed for the city of Pilsen, where they thought that a successful defence could be organised. The city was well-prepared for a lengthy siege, but the defences were undermanned and the defenders lacked enough

gunpowder Gunpowder, also commonly known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive. It consists of a mixture of sulfur, charcoal (which is mostly carbon), and potassium nitrate, potassium ni ...

for their artillery. Mansfeld decided to capture the city before the Catholics were able to gain support from the outside.

Siege

On 19 September 1618 Mansfeld's army reached the outskirts of the city. The defenders blocked two city gates and the third one was reinforced with additional guards. The Protestant army was too weak to start an all-out assault on the castle, so Mansfeld decided to take the city by hunger. On 2 October the Protestant artillery arrived, but the calibre and number of the cannons was small and the bombardment of the

city walls A defensive wall is a fortification usually used to protect a city, town or other settlement from potential aggressors. The walls can range from simple palisades or earthworks to extensive military fortifications such as curtain walls with to ...

brought little effect. The siege continued, with the Protestants receiving new supplies and recruits on a daily basis, while the defenders lacked food and munitions. Also, the main city well was destroyed and the stores of

potable water Drinking water or potable water is water that is safe for ingestion, either when drunk directly in liquid form or consumed indirectly through food preparation. It is often (but not always) supplied through taps, in which case it is also calle ...

soon depleted. Finally, on 21 November, cracks were made in the walls and the Protestant soldiers poured into the city. After several hours of close hand-to-hand combat, all of the town was in Mansfeld's hands.

Aftermath

After capturing the city, Mansfeld demanded 120,000 golden guldens as

war reparations War reparations are compensation payments made after a war by one side to the other. They are intended to cover damage or injury inflicted during a war. War reparations can take the form of hard currency, precious metals, natural resources, in ...

and an additional 47,000

florin The Florentine florin was a gold coin (in Italian ''Fiorino d'oro'') struck from 1252 to 1533 with no significant change in its design or metal content standard during that time. It had 54 grains () of nominally pure or 'fine' gold with a pu ...

s for sparing the city and not burning it to the ground. etween the previous and next sentence, two years passed.However, soon the

Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...

, led by

Bavaria Bavaria, officially the Free State of Bavaria, is a States of Germany, state in the southeast of Germany. With an area of , it is the list of German states by area, largest German state by land area, comprising approximately 1/5 of the total l ...

, gathered enough forces and crossed the border with Bohemia, heading towards Pilsen and

. The newly elected Bohemian king, Frederick V of the Palatinate was aware of the huge superiority of his enemies' forces and ordered his own army to regroup and attack each of the advancing armies separately. However, he was abandoned by most of his allies and his armies dispersed in the dense forests between Pilsen and Prague, which resulted in a decisive defeat in the

Battle of White Mountain The Battle of White Mountain (; ) was an important battle in the early stages of the Thirty Years' War. It led to the defeat of the Bohemian Revolt and ensured Habsburg control for the next three hundred years. It was fought on 8 November 16 ...

References

External links

The Siege Of Pilsen: The Thirty Years' War
worldatlas {{DEFAULTSORT:Pilsen 1618 1618 in the Habsburg monarchy Sieges of the Thirty Years' War Sieges involving Bohemia Bohemian Revolt Conflicts in 1618 Battles of the Thirty Years' War involving the Palatinate History of Plzeň 17th century in Bohemia Battles of the Thirty Years' War involving Bohemia