 Complete the following phrase:  Fourth Army launched the Allied Hundred Days Offensive on 8 August with the Battle of Amiens. The battered divisions of III Corps only had modest objectives, but despite excellent artillery support and CB fire they still made little progress, so on 10 August part of its front including 51st Bde was transferred to Australian Corps. During August and September Fourth Army continued advancing, with a series of successful attacks at Albert, Bapaume, Épehy, and the 