Western Front
Aisne: French Tenth Army enters Laon (population 10,000) after 11-mile advance in 36 hours, presses north to river Serre, has taken 26,000 PoWs and 400 guns since August 17.
Oise: French First Army liberates La Fare.
More fighting on River Selle line; progress north-west of Douai.
Battle of Courtrai begins as Belgian, British, and French troops attack German positions in Flanders and advance 5 miles.
Meuse-Argonne Offensive: Battle of the Argonne (see October 15th): Stiff fighting on Meuse, north of Verdun.
A French armored car surprises a German infantry column:
https://i2.wp.com/ww2-weapons.com/w...lonne.jpg?ssl=1
A pioneer battalion tasked with clearing debris in Cambrai take a rest by playing a piano: © IWM (Q 9546):
https://twitter.com/CenturyAgoToday...803307822895104
British lancers returning from the front at Prémont, France: © IWM (Q 72605):
https://twitter.com/CenturyAgoToday...058738285764611
A Red Cross nurse gives a wounded American soldier a cookie:
https://twitter.com/CenturyAgoToday...073830930866178
Southern Front
Serbia: Serbs storm Austro-Hungarian positions north of Nish.
French cavalry enter Pirot.
Asiatic and Egyptian Theaters
Syria: Tripoli occupied by Allied forces. (19th Infantry Brigade arrives October 18, whole 7th Indian Division by October 28 having covered 270 miles since September 19).
Siberia: French, British and Japanese troops enter Siberia. Admiral Kolchak reaches Omsk.
Political, etc
United Kingdom: M. Eleftherios Venizelos arrives in London.
Turkey: Young Turks resign; Izzet Pasha succeeds Talaat Pasha as Turkish Grand Vizier (see February 4th, 1917).
Finland: Government ask German troops to leave.
Portugal: Government crushes Democrat military rising in Lisbon, Oporto and Coimbra (until October 14) with over 1000 arrests, but violent crime already rampant.