The 25th Division made its preparations on a front from the Wulverghem–Messines road to the Wulverghem–Wytschaete road, facing of the German front line, which tapered to the final objective, wide, at the near crest of the ridge, distant, behind nine German defensive lines. The advance would begin up a short rise to the near edge of the Steenbeek Valley, then up the steep rise from the valley floor between Hell and Sloping Roof farms to Four Huns, Chest and Middle farms on the main ridge, with Lumm Farm on the left flank of the objective. Artillery emplacements for the 25th divisional artillery and 112th Army Field Brigade were built and the Guards Division field artillery was placed in concealed forward positions. Road making and the construction of dugouts and communication trenches took place first between 12 and 30 April and then between 11 May and 6 June. In three hours, an assembly trench was dug from the German front line on the night of complete with communication trenches and barbed wire. Bridges and ladders were delivered in the two days before the attack. of telephone cable was dug in at least deep, which withstood fifty German artillery hits before the British attack.