Diary August 31, 1917

submarine detains a merchant vessel
German submarine detains a merchant vessel at sea.
World War One Diary for Friday, August 31, 1917:

Sea War

North Sea: Royal Navy Air Service raids Belgian coast airfields.
Allied and neutral August shipping losses to U-boats, 186 (84 British) ships worth 509,142t (U-Boat figure 472,372t including 79,549t in Mediterranean); 5 U-boats sunk. Best month of war for Austrian U-boats’ merchant ship sinkings: 38,823t claimed, more than in 1914-16 altogether.

Western Front

Ypres: Desultory British shelling of Menin Road Ridge defences begins. Germans capture some British advanced posts north of St Julien-Poelcapelle road.
Aisne: French gains near Hurtebise.

Southern Fronts

Salonika: British hospital cases c.18,000.
Italian Front: Italians claim 27,000 PoWs since August 19. Heavy fighting at key Mt San Gabriele northeast of Gorizia.

Secret War

Italian Front: In August Italian Commando Supremo Crittografico unit first completely reads Austrian radio signals.

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