Munster Alley dragged in the Australian 5th Brigade — the ensuing bomb fight saw the British and Australian infantry expend over The main attack went ahead, scheduled to start at on 29 July but the Australian 7th Brigade was late in reaching its start line and its movement was detected by the German defenders; when the attack commenced, the Australians were met by a hail of machine gun fire. South of the road the 5th Brigade remained pinned down, unable to even get started. On their left, north of the road, the 7th Brigade encountered uncut wire. On the northern flank some minor progress was made by the 6th Brigade but everywhere else the attack was a failure. Including the attack and the preceding day of preparation the 2nd Division lost over the 7th Brigade had to be withdrawn to reserve, so great were its losses. General Haig was disparaging of the division's failure, telling Lieutenant General William Birdwood, the I Anzac Corps commander, "You're not fighting Bashi-Bazouks now." General Legge and the I Anzac staff resolved to do the job properly. To avoid the confusion of a night advance, the plan was to attack at just before dark at which time the crest of the ridge and the mound of the Pozières windmill would still be discernible. However, to attack at dusk meant assembling by day which was only possible to do in the protection of trenches. Therefore, a system of approach and assembly trenches had to be dug at night. Whenever the Germans detected digging parties, they mistook them for troops assembling to attack and called down a barrage. Originally the attack was to be made at dusk on 2 August but the trenches were as yet incomplete, the digging either being disrupted or the completed trenches demolished by shellfire. The attack was first postponed to 3 August and then to 4 August when the trenches were finally deemed ready. This careful planning and preparation delivered success and when the 2nd Division went in, both O.G. Lines were captured. South of and astride the Albert–Bapaume Road the O.G. Lines had been so thoroughly obliterated by prolonged shelling that the Australians ended up advancing beyond their objectives. From their vantage in the O.G. Lines on the eastern edge of the Pozières ridge, the Australians now looked over green countryside, the village of Courcelette close by and the woods around