Western Front
Second Battle of the Marne: Allies reach Fismes (on River Vesle), and retake 50 villages.
Somme: Germans retreat behind River Ancre from Hamel (north of Albert) to Dernancourt (south of Albert).
German soldiers captured by French troops during the fighting are waiting to be transported backwards:
https://i2.wp.com/ww2-weapons.com/w...Aug18.jpg?ssl=1
A sunken road near Arras shortly after the Allies captured it from the Germans:
https://twitter.com/CenturyAgoToday...018620617916416
Wounded American soldier in the military hospital at Neuilly, France:
https://twitter.com/CenturyAgoToday...048972342304769
Eastern Front
Volga: White Samara Government invites Allied intervention.
Asiatic and Egyptian Theaters
Siberia: British (25th Middlesex Regiment, 521 men) and Japanese 12th Division troops (12,000 by August 21) land at Vladivostok. (see 2nd and April 5th).
Naval and Overseas Operations
Channel: Australian ambulance transport
Warilda sunk by submarine
UC-49, 123 lost.
HMAT
Warilda:
https://twitter.com/CenturyAgoToday...331716666343426
Adriatic: Coastal submarine
UB-53 scuttles after fouling Otranto Barrage and exploding 2 mines.
Political, etc
Canada: Anti-Greek riots break out in Toronto over rumours that a Canadian veteran was mistreated in a Greek café. Thousands of Canadians destroy Greek businesses in the city and clash with police and militia.
Turkey: Samsam es Sultaneh, Persian Prime Minister, resigns (see 7th, and June 20th).