6 December

Western Front

 * Long-distance (22 miles?) bombardment of Dunkirk by the Germans.

Eastern Front

 * Poland: Russians evacuate Lodz and withdraw towards the Bzura-Ravka lines.

Southern Front

 * Serbia: Austrians in disorderly flight from the Ridges towards the frontier.

Naval and Overseas Operations

 * Damaged German submarine SMU U16 enters Esbjerg Harbour (Denmark).

Political

 * Pope Benedict XV tries to bring about a Christmas Truce.