14 September

Western Front

 * Battle of the Aisne begins (continued till 28 September).
 * Germans halt on the Aisne and north of Reims.
 * Heavy fighting round Missy and Vailly.

Eastern Front

 * Poland: Russians force the passage of the San in pursuit of Dankl's beaten army.

Southern Front

 * Bosnia: Vishegrad taken by Serbians and Montenegrins.

Naval and Overseas Operations

 * South Africa: Union forces surprise and defeat German's at Raman's Drift.
 * Cap Trafalgar sunk by RMS Carmania (east coast of South America).