Tenth Battle of the Isonzo (until June 4): Two-day Italian barrage begins at dawn on 25-mile front with 1,058 heavy and 1,320 field guns vs 1,400 Austrian pieces. General Capello gives Badoglio, aged 45, II Corps due to previous commander’s inadequate artillery preparation.
North Sea: 3 Dover Patrol monitors (total 6 x 15-inch guns), and with air cover among 41 ships, shell Zeebrugge for 73 minutes from 28.000 yards, for 1 hour but vital locks not hit although 19 of 250 shells land within 15 yards.
Mediterranean: 6 Australian destroyers (3 from Singapore) being sent to Mediterranean.
Western Front: French ace Nungesser shoots down 2 of 6 Albatros fighters over Douai.