Early in 1917, the 1st Division moved south of the Somme, and the 1st Battalion participated in the advance to the Hindenburg Line. In July, the division was allocated to Operation Hush, a planned seaborne invasion that was later cancelled, and the only significant action the 1st Battalion saw in 1917 was in November, on the last day of the Second Battle of Passchendaele. On 18 April 1918, during the Battle of Béthune, an engagement in the Battle of the Lys, the battalion earned high praise and 33 awards for gallantry when it repulsed an attack by four enemy regiments that had turned the Glosters' flank and, in echoes of the Battle of Alexandria, forced them to fight back to back. The battalion saw action again in September and October on the Hindenburg Line in the Battles of Épehy and St Quentin Canal. The 1st Battalion saw its last action of the war on 4 November 1918 in the Battle of the Sambre, where it helped capture Catillon and the crossing over the Sambre canal, some from the scene of its first casualties over four years previously.