World War I, [d] or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a global conflict between two coalitions: the Allies (or Entente) and the Central Powers.

Feb 8, 2026 · World War I (1914–18) was an international conflict that embroiled most of the nations of Europe along with Russia, the U.S., the Middle East, and other regions. It led to the fall of four great …

Oct 29, 2009 · World War I, also known as the Great War, started in 1914 after the assassination of Archduke Franz Ferdinand of Austria. His murder escalated into a war across Europe that lasted until …

The National WWI Museum and Memorial is America's leading institution dedicated to remembering, interpreting and understanding the Great War and its enduring impact on the global community.

The formal Treaty of Versailles was signed on June 28, 1919, but the US Senate refused to ratify the treaty. The United States suffered 53,402 battle deaths in World War I, in less than six months of …

World War I Overview - Summary of the history and major events of World War I. Includes causes and major battles of World War I

World War I Timeline Experience “The Great War: A Visual History” World War I Timeline Experience "The Great War: A Visual Experience"

Feb 18, 2026 · This collection of maps tells the story of World War I (1914-1918), a global conflict that originated in Europe and emerged from a combination of militarism, alliance systems, imperial …

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

Nov 28, 2025 · The First World War saw the mobilization of more than 65 million soldiers, and the deaths of almost 15 million soldiers and civilians combined.