The change of plan and an increase in the 32nd Division attack frontage to 1400 yards to include Thiepval Château did not reach Rycroft until 10:45 p.m. Twenty minutes before the attack began at 3:15 a.m., Gough called to report that X Corps could not attack until 6:00 a.m. but would co-operate by forming a smoke screen and using half of the corps artillery ammunition to support the III Corps to the south.