The Bolsheviks signed an armistice followed by a separate peace shortly after their armed seizure of power. ^ Often abbreviated as WWI or WW1 ^ Only the Triple Alliance was a formal "alliance"; the …

Nov 17, 2025 · King Charles III leads Britain's Remembrance Sunday ceremony for war dead • Nov. 9, 2025, 8:33 AM ET (AP) WWI soldiers' messages in a bottle found on Australian beach more than …

Oct 29, 2009 · French soldiers in Verdun endure the horrors of trench warfare, a strategy that led to rampant disease, shell shock and mass casualties during WWI.

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 Powers of Germany, …

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

Nov 19, 2025 · Non-lethal tear gas (lachrymatory) was experimented with in the early part of WWI, but the first major assault using deadly poison gas was undertaken by the German Army against French, …

World War I was a war like no other, and U.S. participation in this global conflict had a profound impact on those who fought and on the future of the nation.

WWI Inventions, From Pilates to Zippers, That We Still Use Today These World War I inventions made life easier during—and after—the war.

World War I: To its contemporaries, it was known simply as "the World War" or "the Great War," because it was nearly impossible to imagine a conflict that would surpass the one that shattered …

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