25 October

Western Front

 * Vain German efforts to break through the Allied lines at Dixmude, Ypres, La Bassée and Arras.
 * Vermelles re-occupied by the Germans.

Eastern Front

 * Germans in full retreat in Poland.

Naval and Overseas Operations

 * South Africa: Rebels routed at Calvinia.
 * Destruction of German submarine U-19 by HMS Badger announced.

Political

 * Great Britain: Death of Sir Charles Douglas, Chief of General Staff.
 * Germany: General von Moltke, Chief of the German General Staff, "unwell", his duties undertaken by General von Falkenhayn.