At the mines were to be detonated, followed by the attack of nine divisions onto the ridge. The blue line (first objective) was to be occupied by followed by a two-hour pause. At the advance to the black line (second objective) would begin and consolidation was to start by Fresh troops from the unengaged brigades of the attacking divisions or from the reserve divisions would then pass through, to attack the Oosttaverne line at As soon as the black line was captured, all guns were to bombard the Oosttaverne line, conduct counter-battery fire and place a standing barrage beyond the black line. All operational tanks were to join with the in reserve, to support the infantry advance to the Oosttaverne line.