What has 11.11.1911 got to do with remembrance Sunday?

November 11, 1911, is significant as it marks the anniversary of the first significant military action in World War I, as well as being a date of remembrance for those who served and sacrificed in various conflicts. Remembrance Sunday is observed on the nearest Sunday to November 11 each year, commemorating the end of World War I and honoring all military personnel who lost their lives in service. The date is symbolically linked to the Armistice Day, which officially ended the war on November 11, 1918, thus establishing a tradition of remembrance.