 Complete the following phrase:  However, the main assault aimed at the peaks of Chunuk Bair and Hill 971 was less successful. The force striking for the nearer peak of Chunuk Bair comprised the New Zealand Infantry Brigade. It came within of the peak by dawn on 7 August but was not able to seize the summit until the following morning. This delay had fatal consequences for another supporting attack on the morning of 7 August, that of the 3rd Light Horse Brigade at 