On This Day - 12 May 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 storm most of Bullecourt, and Roeux trenches. Enemy's counter-attack fails.
Artillery activity on Julian front from Tolmino to the sea.
Italians bomb Prosecco (north of Trieste).
Naval and Overseas Operations
Heavy naval bombardment of Zeebrugge by Dover Division, etc.
Two new groups for attestation announced: 41 to 45, and 45 to 50.
Bombs and seditious leaflets seized in Calcutta.
Both Houses, Canadian Parliament, addressed by M. Viviani.