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On the morning of 7 August, it was clear that the prerequisites for the attack had not been met. The initial concept of operations for the August offensive required a simultaneous attack from the rear of Baby 700, thereby creating a hammer and anvil effect on the Ottoman trenches caught in between this pincer movement. Because the New Zealand advance on Chunuk Bair had been held up and failed to reach Chunuk Bair, the troops assaulting the Nek would have to do so alone if the attack was to continue. The New Zealanders had made some progress, though, having captured the lower part of Rhododendron Spur and it was hoped that Chunuk Bair could still be carried; as a result, Birdwood and Skeen decided it was important for the attack on the Nek to proceed as a feint – rather than a pincer – to assist the New Zealanders at Chunuk Bair, while the Australians and Indians from other formations also attacked Hill 971. British troops were also landing at Suvla Bay, having commenced their operation the night before (6 August). A further part of the plan required an attack from Steele's Post through several tunnels against German Officers' Trench by the Lieutenant Colonel Gordon Bennett's 6th Battalion (2nd Infantry Brigade of the Australian 1st Division). The Ottoman machine guns sited there enfiladed the ground in front of Quinn's Post and the Nek and the 6th Battalion's attack was conceived as a preliminary supporting move to suppress Ottoman fire onto the Nek to assist the 3rd Light Horse Brigade's. Planners had requested that this attack be conducted simultaneously with the attack at the Nek, but Birdwood had decided it should be conducted prior. The failure of this attack meant that Ottoman machine guns supporting the 18th Regiment around the Nek remained intact. Nonetheless, Birdwood declared that the 3rd Light Horse Brigade's attack was to proceed, albeit with some modifications. This would see the Australian light horsemen become the right flank of the assault on Chunuk Bair, linking in with the New Zealand Infantry Brigade on Rhododendron Spur. Following the decision to proceed, at 04:00 field artillery and howitzers began firing from the beachhead around Anzac Cove onto the Ottoman trenches around the Nek. These guns were then joined by several warships, including a destroyer, which opened fire on the Nek and other positions around Baby 700. This continued at a steady and deliberate rate until 04:27, when the intensity rose. Due to the proximity of the two sides' trenches, the shells mostly landed behind the first line of Ottoman trenches. Bean describes the bombardment as the heaviest since 2 May; but Carlyon notes that no battleships were assigned to the shelling due to the proximity of the Australian trenches, and describes it as "'desultory' and a 'joke'", citing an officer from the 9th Light Horse Regiment, who were in reserve for the attack.
