World war one World War I (WWI or WW1), also known as the First World War, or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history.Over nine million combatants and seven million civilians died as a result of the war. The war was a historically significant advent because the war drew in all the world's economic great powers, assembled in two opposing alliances. I do not think there will ever be a war this big again as this war settled a lot of big problems. There are still wars but i don't think there will ever be a war this big again.