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)

Western Front

French capture German trenches south of Maurepas.

Long distance British air-raids into Belgium.

Southern Front

Italians land at Salonika.

Italians cross the Vallone and make progress on the northern edge of the Carso (Isonzo).

Asiatic and Egyptian Theatres

Turks attack at Bayud (Sinai), and evacuate it.

Naval and Overseas Operations

German resistance broken at Matamondo (east of Nguru Mountains, East Africa); they retreat south.