Battle of Gallipoli

In April 1915, an amphibious Allied force landed on the Turkish peninsula of Gallipoli in a misguided attempt to knock Turkey out of the war. Though the Allies greatly outnumbered the Turks, Turkish fighters are extremely tenacious and they held their ground. The Allies did not properly understand the terrain and suffered from inadequate intelligence about the enemy. Nine months later the Allies had to withdraw, after suffering 46,000 deaths among over 250,000 casualties.