World War I

World War I, also called the First World War and, prior to World War II, the Great War or the War to End All Wars or alternately spelled World War 1 or simply WWI and WW1, respectively, was a massive conflict across which involved many nations and millions of soldiers. Until World War II, it was the largest, most destructive war in Human history.

The war was waged between the and the  following the declaration of war by  against  in mid-1914. The war lasted until late 1918, when the and Austro-Hungarian Empires agreed to armistice.