24 September

Western Front

 * The Aisne: The battle tends to stalemate.
 * Peronne occupied by the Germans.

Eastern Front

 * Galicia: Przemsyl invested by the Russians.

Asiatic and Egyptian Theatres

 * Tsing-tau: British force arrives at Laoshun to assist the Japanese.

Naval and Overseas Operations

 * Kaiser Wilhelm's Land (New Guinea): Australians occupy town of Friedrich Wilhelm.