World War I: The Ottoman Empire signs the Armistice of Mudros with the Allies.

World War I or the First World War, also known as the Great War, was a global conflict between two coalitions: the Allies and the Central Powers. Main areas of conflict included Europe and the Middle East, as well as parts of Africa and the Asia-Pacific. There were important developments in weaponry including tanks, aircraft, artillery, machine guns, and chemical weapons. One of the deadliest conflicts in history, it resulted in an estimated 30 million military casualties, plus another 8 million civilian deaths from war-related causes and genocide. The movement of large numbers of people was a major factor in the deadly Spanish flu pandemic.

The Armistice of Mudros ended hostilities in the Middle Eastern theatre between Ottoman Turkey and the Allies of World War I. It was signed on 30 October 1918 by the Ottoman Minister of Marine Affairs Rauf Bey and British Admiral Somerset Arthur Gough-Calthorpe, Commander-in-Chief of the British Mediterranean Fleet, on board HMS Agamemnon (1906) in Moudros harbor on the Greek island of Lemnos. It took effect at noon the next day. The table it was signed on is now on board HMS Belfast in London Bridge, though it is not accessible to the public.