Western Front
Artois: Canadians capture Vimy village and Petit Vimy, Givenchy-en-Gohelle, Angres and two other villages. British 50th Divison attacks Wancourt Ridge, captures it by April 15.
Canadian troops advance in the area of Vimy:
https://i2.wp.com/ww2-weapons.com/w...-vimy.jpg?ssl=1
South of Bapume-Cambrai road, British capture village and wood of Gouzeaucourt.
British Rolls-Royce armoured car stuck in a shell hole on the Arras-Tilloy road: © IWM (Q 3876):
https://twitter.com/CenturyAgoToday...8962560/photo/1
Somme, Oise: French Third Army attack (until April 14) soon called off despite aid of 390 heavy guns.
Richthofen scores twice more including 1 of 6 RE8s destroyed as not met by escort. 21 Royal Flying Corps bombers (4 lost to Richthofen’s unit, which 1 fighter lost) plus 17 escorts strike Henin-Lietard rail station.
Naval and Overseas Operations
In an effort to counter German submarines in transit to and from their hunting ground in the shipping channels surrounding the United Kingdom, the Royal Naval Air Service (RNAS) institutes the 'Spider Web' patrol system centered upon the North Hinder Light Vessel.
Asiatic and Egyptian Theaters
British drive Turks from Seraijik (on Deli-Abbas-Mosul road).
Political, etc
Germany: German government announces it will not intern American citizens currently residing in Germany.
Russia: Many Russian battleships and cruisers renamed by Provisional Government to sound more democratic (and on April 29), often return to pre-1905 Mutiny names.
Russian Provisional Government receives representatives of British Labour and French Socialists.
All-Russian Conference of workmen and soldiers' delegates at Petrograd.
Minor Allies: Bolivia severs diplomatic relations with Germany.