"The War to End All Wars" is a phrase commonly used to describe World War I, which lasted from 1914 to 1918. This global conflict involved many of the world's great powers, divided into two main alliances: the Allies and the Central Powers. The war was marked by trench warfare, significant loss of life, and widespread destruction. The conflict ended with the signing of the Treaty of Versailles in 1919, which imposed heavy reparations on Germany and redrew national boundaries in Europe. Although it aimed to establish lasting peace, the treaty's consequences contributed to the rise of World War II two decades later.