 Complete the following phrase:  During the August offensive that was launched by the Allies to break the deadlock on the peninsula, Monashs brigade was to conduct a left hook to the capture of Hill 971, the highest point on the Sari Bair range. On the evening of 67 August, the brigade launched its attack, but poor maps, heavy resistance and the mountainous terrain defeated them. Elsewhere, the offensive also stalled, resulting in disaster for the last co-ordinated effort to defeat the Turkish forces on the Gallipoli Peninsula. By mid-August, Monashs brigade was down to just 1,400 men out of the 3,350 it had begun the campaign with. On 21 August, Monash led them in an attack on 