Mesopotamia:—Russian cavalry, after a ride of 200 miles from the Persian frontier, join the British on the Tigris.
May 19 (Fri.)
A British success at Vimy Ridge.
Mesopotamia:—The Turks evacuate the Es Sinn position and withdraw to Kut.
A German air-raid on Kent.
May 20 (Sat.)
Verdun:—Fierce fighting for the Mort Homme.
A further Italian withdrawal in the Trentino.
May 21 (Sun.)