Champagne: German 10-mile wide gas cloud attack (500t chlorine/phosgene mix) on Fort Pompelle near Reims. Total French gassed: 5,096 (815 dead).
Loos: Unsuccessful German counter-attacks at Quarries, Hulluch and Hohenzollern Redoubt. No penetrations of British line.
British East Africa HQ empowered to deal direct with South Africa.
Senegal: Natives liable to conscription (extended on September 29, 1916).
RUSSIA AND ITALY DECLARE WAR ON BULGARIA (as did Zanzibar the day before).
Serbia: Government leaves Nis for Prisrend.
Britain: John Buchan‘s The Thirty-nine Steps published.