May 12 (Sat.)
Arras Front:—The British capture important enemy positions and the greater part of Bullecourt (see May 17).
Zeebrugge is bombarded by British naval forces.
May 14 (Mon.)
Great Britain:—Sir Eric Geddes is appointed Controller at the Admiralty.
The British gain ground north of Gavrelle, and capture Rœux.
The Isonzo Front:—The Italians assume the offensive from Gorizia to Plava.
May 15 (Tues.)
General Pétain succeeds General Nivelle as Commander-in-Chief of the French army; he is succeeded by General Foch as Chief of Staff.
The Isonzo Front:—The Italians advance on the slopes of Monte Santo.