On This Day - 4 January 1917
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)
Germans fail to cross to right bank of Dvina near Glandau.
Enemy advance in Focsani sector, and also take Gurgueti and Romanul, thus piercing the Braila bridgehead; Russians evacuate Braila.
Russians defeated at Vacareni (Dobruja).
British airmen bomb Maritza bridge at Kuleli Burgas (south of Adrianople).
Naval and Overseas Operations
Russian battleship "Peresvyet" sunk by mine off Port Said.