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Learn World War I

How one assassination pulled Europe and its empires into four years of industrial war.

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World War I, fought from 1914 to 1918, set the Allies, chiefly France, Britain, Russia and later Italy and the United States, against the Central Powers of Germany, Austria-Hungary, the Ottoman Empire and Bulgaria. The assassination of Archduke Franz Ferdinand in Sarajevo on June 28, 1914 set off a chain of ultimatums, mobilizations and alliance commitments that turned a Balkan crisis into a general war. The conflict destroyed four empires and redrew the map of Europe and the Middle East. Beginners usually start with the long-term causes, then the Western Front. Learnr builds your course in short lessons with maps and quizzes.

How to learn World War I, step by step

Learn the alliances and rivalries first. Sketch the blocs before 1914: the Triple Entente of France, Russia and Britain against Germany and Austria-Hungary. Add the naval race between Britain and Germany, Balkan nationalism and the weakening Ottoman Empire. These tensions explain why one murder escalated so far.
Walk through the July Crisis day by day. The weeks between the Sarajevo assassination and the first declarations of war are a classic case study. Follow Austria-Hungary's ultimatum to Serbia, Russian mobilization, Germany's Schlieffen Plan and the invasion of Belgium that brought Britain in, then debate who bears most responsibility.
Understand why the trenches deadlocked. Machine guns, barbed wire and artillery favored defenders, and railways let them rush in reserves. With that in mind, study Verdun and the Somme in 1916 and Passchendaele in 1917, then see how tanks, aircraft and new infantry tactics slowly changed the picture.
Look beyond the Western Front. Cover Tannenberg and the Eastern Front, Gallipoli, the Italian front, and the campaigns in the Middle East and Africa. Soldiers from India, Africa, Australia, Canada and elsewhere fought across these theaters, which is part of why it became a world war.
Read the war through its writers. Poems by Wilfred Owen and Siegfried Sassoon, Erich Maria Remarque's All Quiet on the Western Front, and soldiers' letters show how the war felt. Pair them with official documents to see the gap between strategy and experience.
Retell the chain of events in short sessions. You should be able to retell the causes and turning points as a sequence. Short Learnr lessons with daily review help you rebuild that chain, from Sarajevo to the armistice of November 11, 1918, without notes.

What you'll learn

Explain the long-term causes of the war, from alliances to nationalism
Describe why trench warfare developed and why it was so hard to break
Follow the other fronts, including the Eastern Front, Gallipoli and the Middle East
Explain how the war led to the Russian Revolution and the fall of empires
Evaluate the Treaty of Versailles and its long-term consequences

What's inside your World War I course

A sample path Learnr builds for World War I. Your real course adapts to your goal and level.

1. Europe before 1914: alliances, empires and rivalries
2. The July Crisis and the outbreak of war
3. The Western Front and trench warfare
4. The Eastern Front, Gallipoli and the wider war
5. Home fronts, total war and the Russian Revolution
6. 1918, the armistice and the Paris peace treaties

How long does it take to learn World War I?

A thorough overview of the causes, fronts, home fronts and peace settlement takes about 5 to 8 weeks at 3 to 4 hours a week. Going deeper into the debate over war guilt or a single front can easily fill several more months.

What you need before you start

No prior knowledge is required. A rough picture of the map of Europe in 1914, with its large multinational empires, helps, and the first lessons cover it.

Common mistakes to avoid

Blaming the war on the assassination alone, instead of studying the alliances, militarism, imperial rivalry and nationalism that turned it into a general war.
Assuming the generals were simply foolish. Ask what the technology and communications of 1914 allowed them to do, and read the debates among military historians.
Ending the story in 1918, when the peace treaties, the influenza pandemic and new borders in Europe and the Middle East shaped the decades that followed.

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World War I questions, answered

What were the main causes of World War I?

Historians often summarize them as militarism, alliances, imperialism and nationalism, with the assassination of Franz Ferdinand as the trigger. Debate continues over how much responsibility belongs to Germany, Austria-Hungary, Russia and the other powers.

How did World War I lead to World War II?

The Treaty of Versailles left Germany resentful and burdened with reparations, the new states of Eastern Europe were fragile, and the economic turmoil of the interwar years helped extremist movements rise. Historians debate how direct the link was.