On This Day - 31 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)
Artillery action in Ypres and Wytschaete salients.
Violent German attacks on Moronvilliers massif fail.
442 German to 271 Allied aeroplanes brought down in May.
Austrian counter-attack in Vodice sector repulsed.
Venizelist forces in Macedonia now amount to nearly 2,000 officers and 60,000 men.
Emperor Charles promises a more liberal Constitution after the war.
Meat Sale Order in Great Britain published.