Italian Front: Italians capture positions above Bezzecca basin (Carnic Alps). At Pless Conrad first proposes to Falkenhayn joint Trentino offensive to knock Italy out in spring 1916 with 16 divisions.
Mesopotamia: General Aylmer (VC) signals Townshend that relief force is forming.
Adriatic: 6 French destroyers and 2 submarines arrive at Brindisi after Italian appeals for aid to Serbs. Admiral Dartige meets Abruzzi at Taranto on December 13.
Black Sea: Russian destroyers sink 2 Turk gunboats off Kirpen Islands.
Turkey: Direct rail link with Central Powers restored, helps food supplies.