The succession of offensives exhausted the German military and resulted in casualties for it and the Allies accumulating to number in the millions. A counter-offensive initiated on 18 July forced a German withdrawal. On 8 August, Field Marshal Douglas Haig authorised the beginning of a series of ultimately decisive battles that became collectively known as the "Hundred Days". Positioned south-east of Arras, the Liverpool Irish was committed to battle on 1 September with the object of supporting the 2/6th King's in capturing the previously assaulted village of Riencourt and "straightening out the line". The battalion's brigade achieved its objectives, taking 650 prisoners in the process. Momentum was maintained into late September and October with the breaching of the Hindenburg Line. The battalion participated in the 57th Division's advance east and contribution to the capture of Cambrai, albeit in a limited capacity, before being moved north to the Béthune district on 13 October. The final weeks of the 57th Division's war involved sustained advances and sporadic fighting, culminating in the liberation of Lille. Abandoned by the retreating German garrison, Lille was first entered by elements of 2/7th King's on 17 October. Cameras recorded rapturous crowds greeting the Liverpool Irish and other battalions for a newsreel entitled "The Deliverance of Lille by Haig's Men". The battalion conducted its final offensive action in the vanguard of its brigade, arriving at Flers unopposed and continuing to lead the advance until the 21st. Minor engagements had occurred near the villages of Honnevain, Mont Garni, and Froyennes. Nine days later, on the 30th, the Liverpool Irish withdrew to billets in Hellemmes, east of Lille, and remained there until the end of the war.