On This Day - 9 July 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)
British line advanced slightly on Messines front.
German counter-attack on Aisne front repulsed.
French counter-attacks successful at Braye-en-Laonnois (Aisne).
Russian offensive progresses south-west of Halicz, enemy driven back behind River Lomnica; 1,000 prisoners.
Austrian attacks on Italian positions west of Tolmino (Upper Isonzo) repulsed.
Asiatic and Egyptian Theatres
British aeroplanes bomb Constantinople and the Turkish-German fleet.
Russians report evacuation of towns on Mesopotamian front owing to Turkish pressure.
Naval and Overseas Operations
H.M.S. "Vanguard" blown up as a result of internal explosion; 3 survivors of those on board at the time.
Secret Session of House of Commons on London air raids.