26 April

1915 (Monday)

 * Second Battle of Ypres: Germans pierce British line at Broodseinde: French recover Het Sas; British fail to recover St. Julien.
 * British airmen bomb Courtrai and various neighbouring places.
 * Dardanelles: Hill 141 stormed and V Beach secured.
 * Russian advance on Olty (Armenia).
 * The last German raider overseas (armed merchant cruiser SS Kronprinz Wilhelm) interned at Newport News, USA (see 14 March).
 * French cruiser Léon Gambetta sunk by Austrian submarine in Straits of Otranto.
 * Germans repulsed at Trekopjes, north-east of Swakopmund (German south-west Africa).
 * Lord Kitchener and Mr. Asquith on German barbarity.
 * Secret agreement signed in London between Italian Government and the Entente for Italian co-operation in the war and declarations by which Italy adheres to the Pact of London (see 5 September 1914, 4 May, 30 November and 1 December 1915).
 * Mushir ed Douleh, Persian Prime Minister, resigns (see 14 March and 27 April).
 * Muavin ed Douleh, Persian Foreign Minister, resigns (see 20 February and 27 April).