Western Front
RFC helps engage 184 targets and bombs extensively. Germans bomb Querrieu, Gorbie and Amiens (night October 20-21).
Battle of the Somme: British advance taking 5,000 yards of trenches (with 1,018 PoWs) between Schwaben Redoubt and Le Sars plus 39th Division captures Stuff Trench.
French 120 mm guns in action near Feuilleres, Somme:
http://imgur.com/pJFjIUc* © IWM (Q 79014)
Eastern Front
Transylvania: Falkenhayn drives Rumanian Second Army 12 miles across frontier at Törzburg Pass, Austrians 7 miles inside across Bodza Pass.
Austrians seven miles within Romanian frontier through Buzeu Pass.
In other Passes, Romanians hold their ground.
Dobruja: Romanians retiring; Autro-Hungarians take Toprosari and Kobadinu.
Southern Front
Weather breaks and fighting in the Cherna region dies down.
Naval and Overseas Operations
British submarine torpedoes German cruiser, Kolberg class, in North Sea.
Political, etc.
United Kingdom: Dublin accepts a $2 million loan from a firm in Boston in order to rebuild the city after the Easter Uprising.
Austria-Hungary: Prince Henry of Prussia, the brother of Kaiser Wilhelm II, is named the grand admiral of the Austrian navy, an honorary title.
Karl von Stürgkh, Premier of Cisleithania (Austria), is assassinated by Social Democratic politician Friedrich Adler:
http://imgur.com/hg7z9oi
Italy: Italian government orders all street lights and lights in stores, hotels, and cafés to be dimmed at 10:30 pm to save electricity.
United States: Despite the U-boat threat, 5 liners leave New York City today for Europe, carrying 1,800 passengers.