On This Day - 7 December 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 improved north of La Vacquerie.
End of Battle of Cambrai.
Asiago: Italians continue withdrawal to Melette lines.
Austrians claim 15,000 prisoners since 4 December.
Asiatic and Egyptian Theatres
Hebron (17 miles south of Jerusalem) captured.
President Wilson signs declaration of war v. Austria-Hungary.
Ecuador breaks off relations with Germany.