Theatre definitions: Western Front comprises the Franco-German-Belgian front and any military action in Great Britain, Switzerland, Scandinavia and Holland.  Eastern Front comprises the German-Russian, Austro-Russian and Austro-Romanian fronts.  Southern Front comprises the Austro-Italian and Balkan (including Bulgaro-Romanian) fronts, and Dardanelles.  Asiatic and Egyptian Theatres comprises Egypt, Tripoli, the Sudan, Asia Minor (including Transcaucasia), Arabia, Mesopotamia, Syria, Persia, Afghanistan, Turkestan, China, India, etc.  Naval and Overseas Operations comprises operations on the seas (except where carried out in combination with troops on land) and in Colonial and Overseas theatres, America, etc.  Political, etc. comprises political and internal events in all countries, including Notes, speeches, diplomatic, financial, economic and domestic matters.  Source: Chronology of the War (1914-18, London; copyright expired)

Western Front

Germans gain footing on edge of Forest of Villers-Cotterets; otherwise held up.

End of First Battle of Lassigny.

Eastern Front

Fighting at Irkutsk (Siberia) between Red and White Guards.

Southern Front

Austrian attack against Cady summit and Monticello ridge (north and south of Tonale Pass, western Trentino), defeated by Italians.

Naval and Overseas Operations

British armed cruiser "Patia" torpedoed and sunk by German submarine.