Aisne: Germans demolish irreplaceable medieval castle of Coucy-le-Chateau, 10 miles north of Soissons, to remove potential observation post.
Artois: BEF preparatory bombardment for Arras offensive opens.
Germany: Raider Moewe returns to Kiel.
China: Chinese Navy takes over 2 interned German river gunboats before declaration of war (on August 14, 1917); 20 interned steamers (21,000t) already seized on March 14.
Austria: Princes Sixtus and Xavier in Vienna until March 25.
Britain: Imperial War Cabinet first meets (14 meetings until May 17).
USA: US Cabinet agree war inevitable, Wilson summons Congress for April 2, 1917.