On 1 May the division began embarking at Alexandria to join the Gallipoli Campaign, the Signal Co with Divisional HQ (DHQ) aboard the "Crispin". 2nd Signal Section landed with the Lancashire Fusilier Brigade at Cape Helles on 5–6 May and went straight into action at the Second Battle of Krithia; the rest of the company landed 9–10 May. The division was designated 42nd (East Lancashire) Division (callsign YDB) from 26 May, with the infantry brigades designated 125th (Lancashire Fusiliers) Brigade (ZLE), 126th (East Lancashire) Brigade (ZLF) and 127th (Manchester) Brigade (ZLG).