24 December

Western Front

 * British bomb German airsheds at Brussels.
 * Dover bombed by German aeroplane.
 * French successes at Perthes-les-Hurlus (Champagne) and Consenvoye (Meuse).

Eastern Front

 * Reported rising of Romanians in Transylvania.

Naval and Overseas Operations

 * Portuguese Colony of Angola (south-west Africa) invaded by Germans.

Political

 * Morocco: Great Britain recognises French Protectorate.
 * 134,000 German and 225,000 Austrian prisoners claimed by Russia to date.