World War I: Italy suffers a disastrous defeat at the Battle of Caporetto on the Austro-Italian front.

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 Battle of Caporetto took place on the Italian front of World War I.

October 24 is the 297th day of the year in the Gregorian calendar; 68 days remain until the end of the year.