The British advance towards Cambrai and capture Sorel, Heudicourt, Soyécourt, and other places; the French advance north-east of Soissons.
The British hospital ship Gloucester Castle is torpedoed and sunk in mid-Channel, but without loss of life.
Mar. 31 (Sat.)
The British advance north-west of St. Quentin and capture Jeancourt, Hervilly, Herbecourt, and Vendelles.
Mesopotamia:—The British occupy Deli Abbas.
April 1 (Sun.)
The British capture Savy Wood and Savy, near St. Quentin, and Epéhy and Peizières, on the Bapaume Railway; the French advance towards Laon on the Margival-Vrégny Front.
The Russians occupy Khanikin (north-east of Baghdad).
April 2 (Mon.)
President Wilson asks Congress for a declaration that 'a state of war exists.'