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  1. World War I - Wikipedia

    ^ Including 2,000,000 German soldiers, at least 1,000,000 Austro-Hungarians, 800,000 Ottoman troops[2] ^ Often abbreviated as WWI or WW1 ^ Only the Triple Alliance was a formal …

  2. World War I | Causes, Years, Combatants, Casualties, Maps ...

    Jan 2, 2026 · 1914–1918 Quick Summary Ask the Chatbot Also known as: First World War, Great War, WWI

  3. World War I: Summary, Causes & Facts - HISTORY

    Oct 29, 2009 · WWI was one of the deadliest conflicts in human history, with total casualties estimated at over 16 million.

  4. The United States and the First World War - World War I ...

    Library of Congress image In the summer of 1914, the assassination of Archduke Franz Ferdinand, heir to the Austro-Hungarian Empire, ignited a continental war between the Central …

  5. About WWI - National WWI Museum and Memorial

    WWI Categories WWI Essentials Learn the essentials about World War I and understand the key events and impacts of the war.

  6. The Story of WWI in 50 Images - World History Encyclopedia

    3 days ago · The First World War (1914-18) was the first global conflict, the first mechanised conflict, and the first to involve civilians far from the fighting front. In this gallery of 50 images, …

  7. 1914-1918-Online. International Encyclopedia of the First ...

    Explore the comprehensive, peer-reviewed "1914-1918-online" encyclopedia. Access 1,600+ articles on WWI from global experts.

  8. World War I - Topics | Library of Congress

    Exhibition Echoes of the Great War: American Experiences of WWI Explore how Americans experienced the upheaval of world war—at home and abroad.

  9. Online World War One Indexes and Records - WWI (USA)

    Items listed there for the WWI era include: Arizona (Phoenix), Kansas, Kentucky (Eastern District/Frankfort), Louisiana (Western District/Shreveport), Minnesota, Nebraska, North …

  10. World War I - education.arlingtoncemetery.mil

    On April 6, 1917, the United States officially entered World War I. The war had begun Europe in 1914 and resulted in devastating casualties and global impacts. Over the 19 months of …