Who was the youngest soldier ever to fight in World War 1?

The youngest soldier known to have fought in World War I was Sidney Lewis, a British boy who enlisted at the age of 12. He joined the army in 1915 and served on the Western Front. His age was initially hidden, but he became one of the youngest combatants in the war, highlighting the desperate measures taken during that time to bolster military ranks. Lewis's story is a poignant reminder of the war's impact on youth.