Western Front
Nine RNAS bombers raid Dillingen air works and shoot down a German fighter near Trier (and on December 27).
British soldiers at an advanced dressing station near Beaumont-Hamel, France: http://imgur.com/om8Vb11* © IWM (Q 5798)

Eastern Front
Romania: The city of Orșova, Romania on the Danube River is captured by German and Bulgarian troops. Most of Western Wallachia has fallen.

Asiatic and Egyptian Theaters
Egypt: First bombing of Hejaz Railway: 2 RFC Martinsydes from Sinai cause only slight damage to targets north of Maan.

Political, etc.
Russia: Prime Minster and Foreign Minister Boris Stuermer resigns, due to his connections with Rasputin. http://imgur.com/fbm0cs8 Aleksandr Trepov succeeds. http://imgur.com/KiXj9TF
France: French Minister of War introduces a bill that would reexamine all men exempted from service in order to see if they can still be conscripted.
United Kingdom: Death of Sir Hiram Maxim, 1889 inventor of modern machine gun, aged 76, London. https://i1.wp.com/ww2-weapons.com/w...machine-gun.jpg
Greece: Admiral Fournet demands 10 mountain batteries by December 1, sees King on November 26. (Other sources list this demand issued yesterday).
Mexico: Mexican rebels under Pancho Villa attack the city of Chihuahua and engage government troops in street-to-street fighting.

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On the kinkometer, my kink measures as a sine wave.