- Jun 1 German attack on Fort Vaux, Verdun
- Jun 2 German troops under Lt Rackow take Fort Vaux
- Jun 3 US National Defense Act establishes Reserve Officers Training Corps
- Jun 4 General Aleksei Brusilov begins a massive Russian offensive on the Eastern Front (WWI)
- Jun 5 The Sherif Hussein proclaims a revolt of the Arabs in the province of Hejaz, an action that undermines the Turkish Empire
- Jun 6 Voters in East Cleveland approves women suffrage
Event of Interest
Jun 6 With the death of Yuan Shikai, who has ruled much of China since 1912, the central government virtually collapses in the face of warlords who assert themselves, including Sun Yat-sen
Sun Yat-sen
- Jun 7 Germany troop march into Fort Faux, Verdun
Event of Interest
Jun 7 Theodore Roosevelt declines nomination of the Progressive Party and throws his support behind Republican Charles Evans Hughes
Theodore Roosevelt
- Jun 10 48th Belmont: E Haynes aboard Friar Rock wins in 2:22
- Jun 10 Great Arab Revolt begins against ruling Ottoman turks
- Jun 12 Tennis legend Bill Tilden's 1st appearance at US tennis championship
- Jun 12 30th U.S. Women's National Championship: Molla Bjurstedt beats Louise Hammond Raymond (6-0, 6-1)
Presidential Convention
Jun 14 Democratic Convention convenes in St Louis; Woodrow Wilson campaigns on the slogan "he kept out of the war"
Woodrow Wilson
- Jun 14 Representatives of eight Allied nations hold an economic conference in Paris at which they discuss ways to cripple their enemies economic power during and after the war
- Jun 15 Boys Scouts of America forms
- Jun 15 Boeing Model 1 [B & W Seaplane], the 1st Boeing product, flies for the 1st time
- Jun 16 Boston Brave's Tom Hughes 2nd no-hitter beats Pitts, 2-0
- Jun 16 Passing of the Military Services Bill introduces conscription in New Zealand
- Jun 17 1st national congress of Sarekat Islam at Bandoeng Java
- Jun 17 US troops under General Pershing march into Mexico
- Jun 18 Yanks score in every inning but 8th to beat Indians 19-3 in baseball
- Jun 21 Boston Rube Forster no-hits NY Yankees, 2-0
- Jun 21 Mexican troops defeat US expeditionary force under Gen. Pershing
Contract of Interest
Jun 24 Mary Pickford becomes the first female film star to get a million dollar contract
Mary Pickford
Battle of Interest
Jun 30 General Douglas Haig reports "The men are in splendid spirits" the day before the Battle of the Somme began
Douglas Haig