15 December

Western Front

 * Allies cross Yser Canal and advance from Nieuport towards Lombartzyde.

Eastern Front

 * Poland: Heavy fighting round Sokhachev.

Southern Front

 * Serbia: Austrians evacuate Belgrade, recross Save, and bring their third invasion to an end after loss of 28,000 prisoners, 70 guns, etc.

Asiatic and Egyptian Theatres

 * Syria: Alexandretta bombarded by HMS Doris.

Naval and Overseas Operations

 * Westeinde bombarded by British fleet.
 * Result of enquiry into the loss of HMS Bulwark.

Political

 * Austen Chamberlain's speech at a great public meeting held in the Birmingham Town Hall.