Western Front
Kaiserschlacht: Big-gun duel still in progress; few infantry actions; successful British raid near Beaumont Hamel (Ancre River).
Sharp air fights.
Saarbrucken raided by 12 DH4s (1 shot down, crew killed), shoot down 3 defending fighters. Direct hits on rail targets (61 casualties).
Germans mistakenly bomb hospitals at Hoogsbade and Calais.
French Aviation Res designated 1 st Air Division under General Duval reporting to Petain.
A fox mascot of the British No. 32 Squadron near St. Pol, France: © IWM (Q 12039):
https://twitter.com/CenturyAgoToday...330627833253889
American 320 mm railway gun at Mailly, France firing against German positions: © IWM (Q 58198):
https://twitter.com/CenturyAgoToday...360832710774784
A British soldier next to horses with gas masks during a drill at Mont St. Eloi: © IWM (Q 8795):
https://twitter.com/CenturyAgoToday...665326870892544
A Scottish soldier posing next to a sign warning soldiers not to go beyond due to enemy fire: © IWM (Q 6621):
https://twitter.com/CenturyAgoToday...726985694023680
French, American, and British troops with French civilians and children at Boulogne beach: © IWM (Q 10968):
https://twitter.com/CenturyAgoToday...757185198788609
Eastern Front
Central Russia: Red Army revolt at Saratov on Volga.
German troops in Ukraine:
https://i2.wp.com/ww2-weapons.com/w...raine.jpg?ssl=1
Southern Russia: General Pyotr Krasnov elected Ataman of Don Cossacks (replaces Popov) seeks arms and recognition from Germans in Ukraine (15 million roubles; 12,000 rifles; 46 guns and 89 MGs by July).
Naval and Overseas Operations
The torpedo boat destroyer USS
Ward is launched 17 days after its keel was laid: © IWM (Q 110341):
https://twitter.com/CenturyAgoToday...391042579615745
Political, etc
Austria-Hungary: Emperor Charles sacks Filed Marshal Eduard von Böhm-Ermolli for rowing with Germans, General Alfred Krauss from Italy takes over Ostarmee.
Subject Nationalities Congress in Prague: right-wing Czech Christian Democrats demand independence under federal monarchy (May 22).
United Kingdom: U.S. delegates received by King and Queen.
Penalties on excess food profits.
United States: The Sedition Act was passed in the United States, forbidding Americans from using "disloyal, profane, scurrilous, or abusive language" about the United States government, flag, or armed forces during the ongoing World War I. Overman Act expands Presidents’ war powers on May 20.
US Postal Service starts its first airmail service between Washington DC-Philadelphia-New York. The first mail sent through the service:
https://twitter.com/CenturyAgoToday...421251668369408
Finland: Carl Mannerheim leads 16,000 White Army victory parade through Helsinki (Germans only foreign observers):
https://twitter.com/CenturyAgoToday...696782624215040
Portugal: Senhor J.T. de Souza Barboza, appointed Portuguese Secretary of the lnterior [The appointment of Premier lapsed between May 15th and December 23rd. During this period the functions of the office were performed by the Secretary of the Interior.] (see 15th and December 22nd).