13 October

Western Front

 * Ypres occupied by the Allies, who attempt an offensive.
 * Lille and Ghent occupied by the Germans.
 * Heavy fighting between Bethune and La Bassée.

Eastern Front

 * East Prussia: Germans recover Lyck.

Naval and Overseas Operations

 * South Africa: Open rebellion of Lt-Col. Maritz.

Political

 * Belgium: the Government established at Havre in France, Antwerp mulcted of £20,000,000.