 She was assigned to serve in the North Sea against German surface units counteracting German efforts to sow mines in British waters.Her greatest success led to her destruction, when on the morning of 3 October 1918, aged just under four months, the "L10" surfaced in the Heligoland Bight with the mission of intercepting a German raiding party.This group, consisting of the destroyers , , and , had been delayed in the Bight because the "S34" had detonated a mine.