A Note from the U.S.A. is presented to Germany demanding modification of her submarine policy (see May 4).
The Caucasus:—The Russians carry a strong enemy position west of Erzerum.
April 20 (Thur.)
The rebellion breaks out in Ireland (see May 1).
Verdun:—The French gain ground near Fort Vaux.
Russian troops reach Marseilles.
April 21 (Good Friday)
Sir Roger Casement is captured on the coast of Kerry, near Tralee (see June 26, Aug. 3).
April 22 (Sat.)