Artois – Third Battle of the Scarpe (until May 4): British attack on 16-mile front east of Arras with 14 divisions; 2,685 guns (vs 1,429 German pieces) and 16 tanks before dawn at 0345 hours with few Third Army gains although Canadians (1,259 casualties) storm Fresnoy, capturing 500 PoWs.
Artois – Battle of Bullecourt (until May 17): 6 British-Australian divisions with 12 tanks of Fifth Army break into strongly fortified village 14 miles west of Cambrai and break through Hindenburg Line switch at Queant.
Aisne: Colonial division and 2 French infantry regiments (21st Division) affected by mutinies (until May 4).
France: Anglo-French Paris War Conference (until May 5).
USA: US loans Italy $100 million, France also on May 8 and Russia on May 16.
Brazil: Foreign Minister Müller resigns as German name hampers his neutral policy.
Russia: First demonstration against Provisional Government, Foreign Minister Miliukov defends policy to Petrograd crowds. Provisional Governments just wins Petrograd Soviet confidence vote (on May 4).