The Battle of Gallipoli was a military campaign during World War I that took place from April 1915 to January 1916. It involved an Allied attempt to secure a sea route to Russia and to capture the Ottoman Empire's capital, Constantinople. The campaign included landings on the Gallipoli Peninsula and faced fierce resistance from Ottoman forces led by Mustafa Kemal Atatürk. The battle resulted in heavy casualties on both sides and ultimately ended in failure for the Allies. The campaign is often remembered for its strategic miscalculations and the bravery of soldiers, leading to significant impacts on military tactics and national identities, particularly in Australia and New Zealand.