 Complete the following phrase:  Upon arrival, Chauvels brigade was assigned to hold part of the defensive line that the Allies had established around Anzac Cove. During this time, they undertook patrolling operations, occupied outposts, carried out sniping and worked to dig trenches and lay down wire. For the majority of the campaign the brigades regiments maintained a defensive posture; however, in August the Allies attempted to break the deadlock on the Gallipoli peninsula, launching the August Offensive in an effort to secure the heights around Sari Bair, Chunuk Bair and Baby 700. During this effort, the 1st Light Horse Regiment carried out a feint attack at Popes Hill, in support of the 