8 December

Western Front

 * Long-distance bombardment of Fumes by the Germans.

Southern Front

 * Austrians completely defeated south of Belgrade (Battle of Rudnik Ridges).

Naval and Overseas Operations

 * South Africa: Collapse of rebellion; 1,200 rebels surrender.
 * Battle of Falkland Islands, Admiral Sturdee sinks most of German squadron.

Political

 * Great Britain: Trial of Adolf Ahlers for high-treason commenced.
 * Great Britain: Speech of the Solicitor-General at a great recruiting meeting held in the Victoria Hall, Bolton, Lancashire.