Western Front
Battle of the Somme: After 6-day delay (bad weather and muddy ground) French Sixth Army resumes offensive after Allied bombardment opens at 0600 hours: ‘Good progress’ reported with Bois d’Anderu and Bouchavesnes captured on Bapaume-St Quentin road.
Lloyd George, General Joffre, General Haig, and Albert Thomas (right to left) meeting at the Somme:
http://imgur.com/JrR90al
Lloyd George, British Minister of Munitions, visiting captured German trenches at Fricourt:
http://imgur.com/a8XQsch* © IWM (Q 1179)
Eastern Front
Transylvania: Romanians advance on Kronstadt (Brasso), their right flank.
Dobruja: Field Marshall von Mackensen in supreme command of German-Bulgarian forces.
Southern Front
Macedonia: Allied offensive begins on west flank at 0600 hours. Serb First Army captures foothills of Mt Kajmakcalan (‘butter-churn’; 8,284 ft) 25 miles east-south-east of Monastir. Bulgars occupy Kavalla port. French 156th Division attacks west to Florina, 6 miles east by September 17.
4th Greek Corps of 25,000 men at Kavalla deserts (under Colonel Hatzopoulos) to the Germans. Sent to Germany as "guests".