After the Allies launched their Hundred Days Offensive in August 1918, the division took part in the Battle of Amiens, the Battle of Albert, the Battle of Épehy and the battles against the Hindenburg Line outposts, finally reaching the town of Bellenglise. Withdrawn in late September, the division was replaced by the 3rd and 5th Divisions for the Battle of St Quentin Canal, and then the 2nd Division for the assault on the Beaureviour Line. For these final battles, the 4th Division provided 200 advisers to assist the inexperienced US troops that were assigned to Monash's corps. In early October, the remainder of the Australian Corps was withdrawn from the line for rest at the insistence of Prime Minister Billy Hughes.