Thirty Years' War - Wars of Religion in Europe
Welcome to Study Guides!

Thirty Years' War

Defenestration of Prague
Protestants throw Catholic officials
out the window (Prague, 1618 AD)

In the late 1500s AD, the Holy Roman Emperors were too weak to hold their empire together as one country. Instead, the Holy Roman Empire was divided into many little tiny countries, some of them Catholic and some of them Protestant.

In 1618 AD, the Holy Roman Emperor Ferdinand III began to try to reunite his empire by conquering each of these small German states, and forcing them all to be Catholics.

Ruined town
People dying in a ruined town (Jacques Callot, 1633)

But none of these rulers could afford to pay their soldiers, and so the soldiers paid themselves by plundering the villages and fields as they came to them. As many as half the people in Germany were killed in the war, or starved to death or died of sicknesses like malaria or typhus.

The French minister Richelieu didn't want a strong Holy Roman Empire that could threaten France. The Thirty Years' War became a fight over whether Germany would be united as one country. Philip IV of Spain fought on the side of the Holy Roman Emperor (his distant cousin) against his sister Anne of Austria in France. The Ottoman ruler Kosem Sultan, after losing to Abbas' Iranian attacks from the East, turned west and attacked Austria too. In 1648, Richelieu and Kosem Sultan won, and the Holy Roman Emperor had to let each little German state rule itself, and decide for itself whether it would be Protestant or Catholic.

War of the Spanish Succession

Bibliography and further reading about the Thirty Years War:

Anne of Austria
Early Modern England
Ottoman Empire
Europe Home home

For Presidents' Day, check out our articles about Washington in the Revolutionary War and Lincoln in the Civil War. Find out about the Constitution, the Bill of Rights and the other Amendments, and how Washington promised to include freedom of religion.
Please help other teachers and students find us: link to this page from your class page.
Karen Carr is Associate Professor Emerita, Department of History, Portland State University. She holds a doctorate in Classical Art and Archaeology from the University of Michigan. Follow her on Instagram or Twitter.
Looking for more?
Cite this page
  • Author: K.E. Carr
  • Title:
  • Site Name: Study Guides
  • Publisher:
  • Date Published:
Proud of your class page, homework page, or resource page? Send it in and win a "Great Page!" award!
Sign up for more free articles and special offers in' weekly newsletter:
We will never share your e-mail address unless you allow us to do so. View our privacy policy. Easy unsubscribe links are provided in every email.
Comment on This Article

Cool stuff we've been enjoying: Looking for Valentine's gifts? Check out these new Chromebooks - all the computer you need for only $229.00!. Then study in peace with these Beats wireless headphones - for the exact same price! When you're done, show off your presentation or watch a movie with this excellent smartphone projector for only $39.99!

Does your class page honor diversity, celebrate feminism, and support people of color, LBGTQ people, and people with disabilities? Let us know, and we'll send you a Diversity Banner you can proudly display!
ADVERTISEMENT is loading comments...
(Comments will appear after moderation, if they are kind and helpful. Feel free to ask questions, and we'll try to answer them.)
Cite this page
  • Carr, K.E. . Study Guides, . Web. 20 February, 2017