April 19 (Thur.)
The French capture positions east and west of the Vrégny salient, and advance east of Rheims.
April 20 (Fri.)
The British capture Gonnelieu, 8 miles south-west of Cambrai.
The Aisne Front:—The French continue to advance on the Chemin-des-Dames.
Five German destroyers raid Dover; they are engaged by the British destroyers Broke and Swift, and two of them are sunk (the loss being subsequently admitted by the German Admiralty).
A German destroyer shells Calais.
April 21 (Sat.)
Mesopotamia:—The Turks evacuate Istabulat; the British attack their new positions between Istabulat and Samarra.