Galicia: Austrian Fourth Army occupies Tarnow, takes 30,000 PoWs until May 8.
Carpathians: Kornilov and 48th Division cut off, surrender to Austrians.
Southwest Africa: Botha occupies Karibib rail junction after 40-mile desert march. Colonial Minister statement to British Parliament on German well poisoning.
East Africa: 25th Royal Fusiliers (1166 volunteers) land at Mombasa.
Ionian Sea: Austrian cruiser Novara escapes French warships off Cephalonia, having successfully towed and released German UB8. Austrian destroyer Triglar tows German coastal submarine UB7 through Otranto Straits night 15/16. UB3 towed from Pola on May 23, but lost without trace.
France: Churchill in Paris for secret Anglo-Italian naval talks (convention ends on May 10).