Western Front
Third Battle of Ypres: French success east of Bixschoote; French hold all gains and secure possession of ground east of Bixschoote. Battle of Langemarck 1917: Germans counter-attack near Lens repulsed.
British soldiers at Ypres in the ruins of a church, watching the bombardment of German lines: © IWM (Q 2710): https://twitter.com/CenturyAgoToday...865723988643840
Big French air operations (i. e., the bombing of German towns) on the Meuse.
French soldiers in a trench near La Harazee, France: https://twitter.com/CenturyAgoToday...122458041114624

Southern Front
Macedonia: Anglo-French aircraft bomb various targets (until August 20) despite high winds.

Political, etc
Germany: Kaiser decides Navy will be limited to 25 Zeppelins and only build replacements every 2 months instead of 2 per month.
Zepplein L-58 belongs to the newest generation of German airships, which are completed from August 1917 onwards: https://i0.wp.com/ww2-weapons.com/w...n-L58.jpg?ssl=1
France: M. Denys Cochin succeeded by M. Albert Métin as French Under-Secretary for Blockade (see March 20th, 1916 and November 16th, 1917).
United Kingdom: The Cabinet Committee Report on Air Organisation (the Smuts Report) is presented to the War Cabinet. It recommends the creation of an Air Ministry "to control and administer all matters in connection with air warfare of every kind and that the new ministry should proceed to work out the arrangements for the amalgamation of the two [Air] services and for the legal constitution and discipline of the new Service".
The Report states "the day may not be far off when aerial operations with their devastation of enemy lands and destruction of industrial and populous centres on a vast scale may become the principal operations of war, to which the older forms of military and naval operations may become secondary and subordinate". The Smuts Report lays foundations for the creation of the Royal Air Force.
Balfour speech on Balkans. Ramsay Macdonald letter to president Wilson and Colonel House says US neutrality would have been better for peace.
Brigadier-General Auckland Geddes succeeds Mr. Neville Chamberlain as Director-General National Service.
Official British estimate of German casualties now exceed 4.5 million soldiers killed, wounded, and missing.

__________________
On the kinkometer, my kink measures as a sine wave.