Question

Why was WW1 known as the war to end all wars?

Answer 1

By 1918, the term “The War to End All Wars” had spread all across Europe like a catchphrase and was synonymous with hope for a better future.

Answer 2

World War I was known as the “war to end all wars” because of the great slaughter and destruction it caused. Unfortunately, the peace treaty that officially ended the conflict—the Treaty of Versailles of 1919—forced punitive terms on Germany that destabilized Europe and laid the groundwork for World War II.