France: Mata Hari books into Grand Hotel, Paris, takes many military lovers but falls in love with Russian Captain Maslov during August.
Verdun: Unsuccessful German attacks west of Hill 304.
Brusilov offensive – Pripet: Austro-German counter-offensive until June 24. Marwitz’s 12 1/2 divisions gain only a few miles on river Stokhod against Kaledin (2,000 PoWs and 4 guns) for 40,000 casualties.
Trentino: Italian counteroffensive until July 24 with 4 corps (177 battalions + 800 guns vs. 168 battalions + 680 guns) recaptures Mt Magari and Cima Isidora (June 18). Cadorna decides Isonzo attack will aim just to take Gorizia.
Arabia: 1,505-strong Turk Jeddah garrison with 16 guns surrender after naval and seaplane bombardment.
Channel: Destroyer HMS Eden sunk by collision with SS France.