June 28 - Assanation of Franz Ferdinand. July 28 - World War I begins. Austria-Hungary declares war on Serbia. August 1 - Germany declares war on Russia. August 2 - Germany conquers Luxembourg. August 3 - Germany declares war on France August 4 - Germany declares war on Belgium, United Kingdom declares war on Germany. August 5 - Battle of Liėge starts. August 6 - Austria-Hungary declares war on Russia. Serbia declares war on Germany. August 11 - France declares war on Austria-Hungary. August 12 - United Kingdom declares war on Austria-Hungary. August 16 - Battle of Liėge ends. August 17 - Battle of Tannenburg starts. August 20 - Germany occupies Brussels. August 23 - Japan joins the Allies August 28 - Battle of Heligoland Bight. September 6-September 7 - Battle of Marne. October 9 - Belgium falls to Germany November 1 - The Ottoman Empire joins the Central Powers Retrieved from "https://war.wikia.org/wiki/1914?oldid=5941" Categories: Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.