On This Day - 13 January 1915
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 recover all Hill 132, and take the heights of Vregny.
Russians advance on Lower Vistula and occupy Serpets north of Plotsk.
Asiatic and Egyptian Theatres
Battle of Kara Urgan (Armenia), which has lasted several days, continues desperately.
Turks occupy Tabriz (Persia).
Naval and Overseas Operations
Germans attack Jasin (German East Africa).
Resignation of Count Berchtold, Austro-Hungarian Minister of Foreign Affairs. He is succeeded by Baron Stephen Burian.