Western Front
Battle of the Somme: British storm Horseshoe Trench, improve their position between Somme and Ancre; advance slightly in some sectors.
Germans massing in Mametz Wood, and recapture Estrees south of Somme.
French capture the village of Hem; north of Somme they repel counter-attacks at Belloy-en-Santerre. French Foreign Legion (869 casualties) relieved after sending back 730 PoWs and 4 MGs and repulsing 2 night counter-attacks.
A German shell exploding near a British camp near Albert:
http://imgur.com/T6oRXSo* © IWM (Q 778).
Battle of Verdun: German attacks at Verdun on Avocourt and Hill 304 “fail.”
Eastern Front
Battle of Baronovichi (until July 14): On the Riga and Baranovichi sectors, fighting continues.
Brusilov Offensive: In Galicia, Russians continue their attacks south of Dniester. Russian Army cuts the Delatyn-Korosmezo railway, which supplies the Austro-Hungarian Army defending Galicia.
Southern Front
Risings and guerrilla warfare in Serbia and Montenegro, owing to weakening of Austrian garrisons; continue for duration of war.
Asiatic and Egyptian Theaters
Ottoman troops drive out the Russians from the Persian town of Kermanshah after two days of fighting.
Naval and Overseas Operations:
Eastern Mediterranean: U-39 sails, lands Lieutenant Todenwarth and 7 men with munitions for Senussi, North Africa (fetched back October 13).
North Sea: U-boat campaign against fishing vessels begins (36 sunk).
Political, etc.
United Kingdom: King George V decides to confer peerage on Sir Edward Grey, the Secretary of Foreign Affairs.
Mexican government agrees to negotiate with the U.S. in order to defuse tensions, and U.S. decides not to further reinforce the border.
Germany remains confident in their defense of the Somme, with Major Moraht accurately stating that Allied advances are “very scant.”