On April 25, 1915, 78,000 British, French, Australian, and New Zealand soldiers stormed ashore the Gallipoli peninsula amid a fury of Ottoman machine guns and shellfire. They struggled up treacherous bluffs wreathed with barbed wire, reading from maps as much as seventy years out of date. This was D-Day fought with the tactics and technology of World War I. The amphibious assault, intended to dismantle the Turkish guns that dotted the straits of the Dardanelles, would fail decisively. Facing hardened trench lines and determined Turkish defenders, the Entente forces would spend eight months and 47,000 lives to advance—at their maximum—four bloody miles. They would never come close to their day-one objective.