Western Front
Kaiserschlacht: One source labels infantry fighting “unimportant”: Successful local raids round Arras. French raids on Kemmel front.
Artillery active south of the Avre.
A British soldier demonstrating to Americans on boxing at Moulle, France: © IWM (Q 9076):
https://twitter.com/CenturyAgoToday...879915347992577
British soldiers giving instructions to Americans on camouflage at Moulle, France: © IWM (Q 10315):
https://twitter.com/CenturyAgoToday...895014796316673
British and captured German soldiers carrying a wounded soldier back from the frontlines:
https://twitter.com/CenturyAgoToday...925218637901826
A hospital in Paris destroyed by a German long-range cannon:
https://twitter.com/CenturyAgoToday...198368378257409
A British soldier using a hose to extinguish a fire after an ammunition dump exploded at Saigneville: © IWM (Q 11479):
https://twitter.com/CenturyAgoToday...243732397457408
Destroyed remains of a British ammunition dump at Saigneville, France after it caught fire: © IWM (Q 11478):
https://twitter.com/CenturyAgoToday...228576573554692
Two French veterans showing off their prosthetic legs at an American Red Cross facility at St. Maurice. In the middle is a French boy who also lost a leg due to a grenade:
https://twitter.com/CenturyAgoToday...274048742977536
Southern Front
Italy: Infantry fighting on Italian mountain front increases; much aerial activity.
Naval and Overseas Operations
Channel: British armed mercantile cruiser
Moldavia, carrying American troops, torpedoed and sunk in Channel; one source says 56 lost, another says 64 lost.
Adriatic: Royal Navy submarine
H.4 sinks returning coastal submarine
UB-52 40 miles south of Cattaro.
UB-52 sunk on the way back to Cattaro:
https://i1.wp.com/ww2-weapons.com/w...UB-52.jpg?ssl=1
Belgian Congo: Katanga Railway (Bukama – Cape Town) completed.
Asiatic and Egyptian Theaters
Arabia: Arabs successfully attack Turks near Abu Naam (80 miles north of Medina).
Armenia: Movses Silikov retakes Sardarabad and drives Turkish 11th Division 30 miles north until May 24 while other Armenian units drive Turkish vanguard back to Amamli.
Political, etc
Russia: Factory delegates in Moscow call for strike against Soviet Government.
United Kingdom: War Cabinet decides to send 560-man military mission to Archangel to train Whites and 600 troops to Murmansk; they decide large scale intervention inevitable on May 29.
Robert Lockhart sends Foreign Office Savinkov plan ‘to murder all Bolshevik leaders on night of Allied landing and form a Government … in reality a military dictatorship’.
United States: U.S. National Conscription (fight or work) after 1 July decided on.
U.S. Army in France announces it will issue its troops 0.4 ounces of tobacco and 10 rolls of cigarette papers as part of daily rations.
Minor Allies: Costa Rica declares war on Germany (see September 21st, 1917).