Having established two beachheads at great cost Hamilton determined to extend the Allied position in the south, with attacks directed towards Krithia. Unduly optimistic in its aims three successive operations were launched upon Krithia by Hunter-Weston in April, May and June 1915: all were thrown back by Liman's increasingly effective Turkish defence force.
Meanwhile British First Sea Lord Admiral Fisher's dramatic resignation on 15 May 1915 over Churchill's handling of the Gallipoli campaign led to the latter's own downfall as Churchill too resigned, his wartime political career apparently effectively over. Churchill had earlier, on 23 March, reluctantly admitted the failure of the purely naval bombardment to the War Cabinet, denting his already frail political credibility.