Artois: Major French 20-division attack against reinforced defenders (307 heavy guns); only Moroccan Division reaches Vimy Ridge crest for second time (2nd Regiment of 1st Legion has 645 casualties), but cannot be supported as flanking corps fail against fierce resistance.
Flanders: The well-prepared British local 3rd Division advance north of Hooge (3,500 casualties including Major Wavell who loses eye) after 1 3/4 hour shelling makes some ground towards Bellewaarde Farm but causes only 457 casualties (including 157 PoWs) leaving ridge with defenders.
Vosges: Limited French advance in Fecht Valley.
Galicia: Third Battle of Lemberg (until June 22), 41 divisions on each side.
Isonzo: Alpini capture Krn peak (c. 8,000 ft) from Bosnian troops then evacuate it without realising its importance.
Cameroons: Harassed Allies withdraw to river Ngwe (until June 18) but clear main road of Germans by June 26 (301 Allied casualties and more than 600 sick since May 25).
Belgium: Tax and property seizure imposed on all Belgians not returning by March 1.
Britain: Lloyd George takes oath as Munitions Minister.
Russia: Odessa gendarmerie chief reports 200 Latvian Bolsheviks have infiltrated Army as volunteers.