- The Ancient Order of Foresters Orange organises a benefit concert to be held on Boxing Day to support the 18 members of their organisation who are on active service overseas. Soldiers’ Comforts
- Prime Minister Hughes states that the government may look into the issue of daylight savings. The question of marriage by proxy for soldiers serving overseas is also under consideration. Daylight Saving Bill
- Russian troops continue their progress in the Carpathians; they capture the peak commanding Jablonitsa Pass
- French and Serbian troops on the Southern Front advance to the east of Monastir
- German submarine SM U-65 torpedoes the British passenger ship Caledonia in the Mediterranean Sea 125 nautical miles south east of Malta. The Caledonia sinks, with the loss of one crew member; her captain is taken prisoner of war.
- Admiral Sir John Rushworth Jellicoe is appointed First Lord of the Sea, replacing Admiral Sir Henry Jackson
Admiral Sir John Rushmore Jellicoe. Image courtesy George Grantham Bain Collection/Library of Congress, Washington, DC. (Digital File Number: LC-DIG-ggbain-38732).
