Russia: Brusilov resigns when Alexeiev suggests postponement, so allowed to continue. Austrians intercept his attack message to troops.
Saloniki: Allies proclaim state of siege and oust Greek authorities occupying all official buildings. 35,000t of Allied forage burnt in supply depot.
Turkey: At Kut captured British general Townshend arrives at Constantinople to lavish reception. Kut PoWs reach Mosul, get first stew since capture.
Persia – Border action at Khanikin: 6,000 Russians with 12 guns attack 7,000 Turks (6th Division) before Baratov evacuates Kasr-i-Shirin on June 6 which Ali Ihsan Pasha retakes on June 8.
East Africa: British occupy Namena.
Black Sea: Russians shell Bourgas, Bulgaria, sink Turk steamers.
USA: National Defense Act increases regular Army by five annual stages to 175,000 men; National Guard to 450,000 men; officers reserve corps created.