In early 1918, after wintering in Belgium, it was transferred south to France to assist in repulsing the major offensive the Germans launched on the Western Front following the capitulation of Tsarist Russia. Along with the rest of the 5th Division, the battalion defended the Allied line around Corbie, holding a position north of Villers-Bretonneux. After the German offensive lost momentum, in August, around Amiens, the Allies launched the Hundred Days Offensive, which ultimately brought about an end to the war. The 14th Brigade remained in reserve initially, before capturing Peronne in early September. During late September and early October the 56th took part in the Battle of St. Quentin Canal, before it was withdrawn from the line. Having suffered heavy casualties during the fighting earlier in the year, the Australian Corps was re-organised and the 56th Battalion was amalgamated with the 54th Battalion on 11 October forming the 54th/56th Battalion. This unit did not see any further action before the war ended in November and together they were later amalgamated with the rest of the 14th Brigade, with the 56th Battalion being disbanded on 10 April 1919.