10 Hollywood Actors Who Served in World War I

In the early 20th century, the rise of Germany and the decline of the Ottoman Empire disturbed the long-standing balance of power in Europe, at the same time that unresolved territorial disputes and shifting alliances created rivalries and an arms race between the great powers. Growing tensions reached a breaking point on June 28, 1914, when the heir to Austro-Hungarian throne was assassinated by an young Bosnian Serb revolutionary, who intended to free Bosnia and Herzegovina from Austro-Hungarian rule. Austria-Hungary blamed Serbia, as the assassination team was helped by a Serbian secret nationalist group, and declared war on the following month. Russia immediately mobilised its troops in Serbia's defense, promtping Germany, who had an alliance with Austria-Hungary, to declare war on both Russia and its ally, France. The United Kingdom subsequently marched against Germany, leading to widespread conflict. (from left to right) Drawing by Achille Beltrame published in the Italian...