World War I was a global war originating in Europe that lasted from 1914 to 1918. Contemporaneously known as the Great War or "the war to end all wars", it led to the mobilisation of more than 70 million military personnel, including 60 million Europeans, making it one of the largest wars in history. This series of Eight volumes provides year by year analysis of the war that resulted in the death of more than 17 million deaths worldwide.