The Hungarian Premier, Count Tisza, resigns.
May 23 (Wed.)
The Isonzo Front:—The Italians advance on a wide front on the Southern Carso, and capture important positions and 9000 prisoners.
A Zeppelin raid on East Anglia.
May 24 (Thur.)
The Isonzo Front:—The Italians make further progress on the Southern Carso.
May 25 (Fri.)
The Isonzo Front:—The Italians continue to advance on the Southern Carso.
A raid by 17 German aeroplanes on Folkestone; three German aeroplanes are brought down on the return journey by British naval airmen from Dunkirk.
H.M.S. Hilary (armed merchant cruiser) is sunk by a submarine in the Atlantic.