Western Front
French ace-to-be Xavier de Sevin scores his first victory over Chamouille (Champagne).
Battle of the Somme: British repulse further counter-attacks at Contalmaison. RFC No. 18 Squadron night bombs 8 targets (night 11-12) including La Bassee.
French medical orderlies walking through the ruins of Meharicourt:
http://imgur.com/nJri7Ke © IWM (Q 61233)
Battle of Verdun: Germans gain some ground at Chapelle St. Fine, at intersection of Fleury-Vaux roads.
Eastern Front
Brusilov Offensive: Furious fighting continues on the Stokhod, with no decisive results.
Southern Front
An Austrian attack on the Adige driven back.
Asiatic and Egyptian Theaters
Russians under General Yudenich advance west of Erzerum on the Erzingan road; Mamakhatun (Armenia) again taken by Russian forces (see May 31st).
Political, etc.
United States: President Wilson signs the Federal Aid Road Act, which provides the first federal highway funding in the U.S. Polio epidemic continues in New York City with 195 new cases and 32 deaths in the past 24 hours. $100,000 reward is offered for a cure.