Western Front
Ypres: Sopwith Camel fighter first used as light bombers with four 20lb or 25lb bombs.
Eastern Front
German infantry attack Lemburg (east of Riga) repulsed with loss by Letts.
Southern Front
Fighting dying down on Italian front.
An Austro-Hungarian officer taking a field bath near the Isonzo front:
https://twitter.com/CenturyAgoToday...835718310158336
Naval and Overseas Operations
East Africa: Kilwa Force action at Mihambia (until September 20) costs 145 casualties and fails to cut off over 1,100 German troops retreat behind burning grass. British advance resumes on September 24 after thirst quenched.
British infantrymen in East Africa:
https://i0.wp.com/ww2-weapons.com/w...-1917.jpg?ssl=1
Baltic: 20 Russian warships at Helsinki raise Red Flag.
Political, etc
Russia: M. Kerenski tries to limit powers of Extremists.
France: Vote of Confidence in French Government.
United States: 343,500 U.S.A. conscripts joined to date.
National Equal Rights League meets in New York City to urge equal rights for African American workers and soldiers.