On This Day - 15 September 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)
Second phase of Third Battle of Ypres: London troops capture strong point north of Inverness Copse (Ypres).
Enemy repulsed by Portuguese at Neuve Chapelle.
Four successive Austrian counter-attacks on Bainsizza Plateau fail; Italians gain ground to south-east.
Asiatic and Egyptian Theatres
Hottest season on record at Baghdad.
Troops' health and spirits excellent.
Naval and Overseas Operations
Seaplanes successfully attack shipping between Blankenberghe and Ostend.
Provisional Council of 5 declares Russia a Republic under M. Kerenski; new War Cabinet formed.