Several terms redirect here. For other uses, see WWI (disambiguation), The First World War (disambiguation), World War One (disambiguation), and Great War (disambiguation).

Nov 9, 2025 · WWI soldiers' messages in a bottle found on Australian beach more than 100 years later • Oct. 29, 2025, 7:59 AM ET (AP)

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.

The Library of Congress is uniquely prepared to tell the story of the United States' participation in the Great War. The Library’s unparalleled collections include posters, recordings, newspapers, …

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

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

This is a list of the events of World War I in chronological order.

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 …

Site of the United States WWI Centennial Commission, and the Doughboy Foundation, building the National WWI Memorial in Washington, D.C.

2 days ago · 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 …