The West Lancashire Division reformed in January 1916 as the 55th (West Lancashire) Division, under the command of Major-General Hugh Jeudwine. Many of the division's original constituent battalions returned and the Liverpool Scottish joined the 166th Brigade. Before being committed to the Somme Offensive in July 1916, the 55th had concentrated in the Amiens area. The Liverpool Scottish moved to the Somme in mid-July and relieved the 18th King's near Montauban on the 31st. After spending six days under constant artillery fire undertaking auxiliary duties in the vicinity of Bernafay and Trônes Woods, the Liverpool Scottish moved to Mansel Copse in preparation for an assault on Guillemont. The village had already been subjected to two attacks since the opening battles of the Somme. At 0420 on 8 August, brigades from the 2nd and 55th divisions began a concerted effort to take Guillemont. The operation failed with resultingly heavy losses. Despite that, the Liverpool Irish and part of the 1st King's managed to enter Guillemont, but became isolated. More than 700 men from the two battalions were killed, wounded, or missing, many becoming prisoners of war.