Haking "was most optimistic" about the upcoming Somme offensive (Millward War Diary, 22 June 1916). At a conference of his corps commanders (8 July) Monro (GOC First Army) said that the Battle of the Somme was progressing "favourably", but ordered Haking to prepare a plan on the assumption that he was to be assisted by a division of Second Army and some extra artillery (on the same day 4th Australian Division was ordered south to the Somme but instructed to leave behind its artillery). Haking presented a scheme to Monro (9 July) for a two-division attack over a front of 4,200 yards, aiming to capture part of Aubers-Fromelles Ridge, which lay a mile or so behind the German line. Monro initially rejected this plan in favour of a Canadian attack at Vimy Ridge, but after pressure from GHQ – caused by the movement of German reserves from Lille to the Somme sector – informed Haking (13 July) that it was to go ahead. That day Haking's plan was approved at a conference at Choques, attended by Maj-Gen Butler (Deputy Chief of Staff, BEF) with Major Howard in attendance, Maj-Gen Barrow (Chief of Staff First Army) and Maj-Gen Harington (Chief of Staff Second Army). Plumer (GOC Second Army) also approved the plan at another meeting that day, and at another subsequent meeting, and it was agreed that the bombardment – by the equivalent of five or six division's worth of artillery – should start on 14 July, with a view to an attack on 17 July to capture and hold the German first line.